In this Article
- VBA Loop Quick Examples
- For Each Loops
- For Next Loops
- Do While Loops
- Do Until Loops
- VBA Loop Builder
- VBA For Next Loop
- For Loop Syntax
- For Loop Step
- For Loop Step – Inverse
- Nested For Loop
- Exit For
- Continue For
- VBA For Each Loop
- For Each Cell in Range
- For Each Worksheet in Workbook
- For Each Open Workbook
- For Each Shape in Worksheet
- For Each Shape in Each Worksheet in Workbook
- For Each – IF Loop
- VBA Do While Loop
- Do While
- Loop While
- VBA Do Until Loop
- Do Until
- Loop Until
- Exit Do Loop
- End or Break Loop
- More Loop Examples
- Loop Through Rows
- Loop Through Columns
- Loop Through Files in a Folder
- Loop Through Array
- Loops in Access VBA
To work effectively in VBA, you must understand Loops.
Loops allow you to repeat a code block a set number of times or repeat a code block on a each object in a set of objects.
First we will show you a few examples to show you what loops are capable of. Then we will teach you everything about loops.
VBA Loop Quick Examples
For Each Loops
For Each Loops loop through every object in a collection, such as every worksheet in workbook or every cell in a range.
Loop Through all Worksheets in Workbook
This code will loop through all worksheets in the workbook, unhiding each sheet:
Sub LoopThroughSheets()
Dim ws As Worksheet
For Each ws In Worksheets
ws.Visible = True
Next
End Sub
Loop Through All Cells in Range
This code will loop through a range of cells, testing if the cell value is negative, positive, or zero:
Sub If_Loop()
Dim Cell as Range
For Each Cell In Range("A2:A6")
If Cell.Value > 0 Then
Cell.Offset(0, 1).Value = "Positive"
ElseIf Cell.Value < 0 Then
Cell.Offset(0, 1).Value = "Negative"
Else
Cell.Offset(0, 1).Value = "Zero"
End If
Next Cell
End Sub
For Next Loops
Another type of “For” Loop is the For Next Loop. The For Next Loop allows you to loop through integers.
This code will loop through integers 1 through 10, displaying each with a message box:
Sub ForLoop()
Dim i As Integer
For i = 1 To 10
MsgBox i
Next i
End Sub
Do While Loops
Do While Loops will loop while a condition is met. This code will also loop through integers 1 through 10, displaying each with a message box.
Sub DoWhileLoop()
Dim n As Integer
n = 1
Do While n < 11
MsgBox n
n = n + 1
Loop
End Sub
Do Until Loops
Conversely, Do Until Loops will loop until a condition is met. This code does the same thing as the previous two examples.
Sub DoUntilLoop()
Dim n As Integer
n = 1
Do Until n >= 10
MsgBox n
n = n + 1
Loop
End Sub
We will discuss this below, but you need to be extremely careful when creating Do While or Do Until loops so that you don’t create a never ending loop.
VBA Loop Builder
This is a screenshot of the “Loop Builder” from our Premium VBA Add-in: AutoMacro. The Loop Builder allows you to quickly and easily build loops to loop through different objects, or numbers. You can perform actions on each object and/or select only objects that meet certain criteria.
The add-in also contains many other code builders, an extensive VBA code library, and an assortment of coding tools. It’s a must have for any VBA developer.
Now we will cover the different types of loops in depth.
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VBA For Next Loop
For Loop Syntax
The For Next Loop allows you to repeat a block of code a specified number of times. The syntax is:
[Dim Counter as Integer]
For Counter = Start to End [Step Value]
[Do Something]
Next [Counter]
Where the items in brackets are optional.
- [Dim Counter as Long] – Declares the counter variable. Required if Option Explicit is declared at the top of your module.
- Counter – An integer variable used to count
- Start – The start value (Ex. 1)
- End – The end value (Ex. 10)
- [Step Value] – Allows you to count every n integers instead of every 1 integer. You can also go in reverse with a negative value (ex. Step -1)
- [Do Something] – The code that will repeat
- Next [Counter] – Closing statement to the For Next Loop. You can include the Counter or not. However, I strongly recommend including the counter as it makes your code easier to read.
If that’s confusing, don’t worry. We will review some examples:
Count to 10
This code will count to 10 using a For-Next Loop:
Sub ForEach_CountTo10()
Dim n As Integer
For n = 1 To 10
MsgBox n
Next n
End Sub
For Loop Step
Count to 10 – Only Even Numbers
This code will count to 10 only counting even numbers:
Sub ForEach_CountTo10_Even()
Dim n As Integer
For n = 2 To 10 Step 2
MsgBox n
Next n
End Sub
Notice we added “Step 2”. This tells the For Loop to “step” through the counter by 2. We can also use a negative step value to step in reverse:
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For Loop Step – Inverse
Countdown from 10
This code will countdown from 10:
Sub ForEach_Countdown_Inverse()
Dim n As Integer
For n = 10 To 1 Step -1
MsgBox n
Next n
MsgBox "Lift Off"
End Sub
Delete Rows if Cell is Blank
I’ve most frequently used a negative step For-Loop to loop through ranges of cells, deleting rows that meet certain criteria. If you loop from the top rows to the bottom rows, as you delete rows you will mess up your counter.
This example will delete rows with blank cells (starting from the bottom row):
Sub ForEach_DeleteRows_BlankCells()
Dim n As Integer
For n = 10 To 1 Step -1
If Range("a" & n).Value = "" Then
Range("a" & n).EntireRow.Delete
End If
Next n
End Sub
Nested For Loop
You can “nest” one For Loop inside another For Loop. We will use Nested For Loops to create a multiplication table:
Sub Nested_ForEach_MultiplicationTable()
Dim row As Integer, col As Integer
For row = 1 To 9
For col = 1 To 9
Cells(row + 1, col + 1).Value = row * col
Next col
Next row
End Sub
Exit For
The Exit For statement allows you to exit a For Next loop immediately.
You would usually use Exit For along with an If Statement, exiting the For Next Loop if a certain condition is met.
For example, you might use a For Loop to find a cell. Once that cell is found, you can exit the loop to speed up your code.
This code will loop through rows 1 to 1000, looking for “error” in column A. If it’s found, the code will select the cell, alert you to the found error, and exit the loop:
Sub ExitFor_Loop()
Dim i As Integer
For i = 1 To 1000
If Range("A" & i).Value = "error" Then
Range("A" & i).Select
MsgBox "Error Found"
Exit For
End If
Next i
End Sub
Important: In the case of Nested For Loops, Exit For only exits the current For Loop, not all active Loops.
Continue For
VBA does not have the “Continue” command that’s found in Visual Basic. Instead, you will need to use “Exit”.
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VBA For Each Loop
The VBA For Each Loop will loop through all objects in a collection:
- All cells in a range
- All worksheets in a workbook
- All shapes in a worksheet
- All open workbooks
You can also use Nested For Each Loops to:
- All cells in a range on all worksheets
- All shapes on all worksheets
- All sheets in all open workbooks
- and so on…
The syntax is:
For Each Object in Collection
[Do Something]
Next [Object]
Where:
- Object – Variable representing a Range, Worksheet, Workbook, Shape, etc. (ex. rng)
- Collection – Collection of objects (ex. Range(“a1:a10”)
- [Do Something] – Code block to run on each object
- Next [Object] – Closing statement. [Object] is optional, however strongly recommended.
For Each Cell in Range
This code will loop through each cell in a range:
Sub ForEachCell_inRange()
Dim cell As Range
For Each cell In Range("a1:a10")
cell.Value = cell.Offset(0,1).Value
Next cell
End Sub
For Each Worksheet in Workbook
This code will loop through all worksheets in a workbook, unprotecting each sheet:
Sub ForEachSheet_inWorkbook()
Dim ws As Worksheet
For Each ws In Worksheets
ws.Unprotect "password"
Next ws
End Sub
For Each Open Workbook
This code will save and close all open workbooks:
Sub ForEachWB_inWorkbooks()
Dim wb As Workbook
For Each wb In Workbooks
wb.Close SaveChanges:=True
Next wb
End Sub
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For Each Shape in Worksheet
This code will delete all shapes in the active sheet.
Sub ForEachShape()
Dim shp As Shape
For Each shp In ActiveSheet.Shapes
shp.Delete
Next shp
End Sub
For Each Shape in Each Worksheet in Workbook
You can also nest For Each Loops. Here we will loop through all shapes in all worksheets in the active workbook:
Sub ForEachShape_inAllWorksheets()
Dim shp As Shape, ws As Worksheet
For Each ws In Worksheets
For Each shp In ws.Shapes
shp.Delete
Next shp
Next ws
End Sub
For Each – IF Loop
As we’ve mentioned before, you can use an If statement within a loop, performing actions only if certain criteria is met.
This code will hide all blank rows in a range:
Sub ForEachCell_inRange()
Dim cell As Range
For Each cell In Range("a1:a10")
If cell.Value = "" Then _
cell.EntireRow.Hidden = True
Next cell
End Sub
VBA Do While Loop
The VBA Do While and Do Until (see next section) are very similar. They will repeat a loop while (or until) a condition is met.
The Do While Loop will repeat a loop while a condition is met.
Here is the Do While Syntax:
Do While Condition
[Do Something]
Loop
Where:
- Condition – The condition to test
- [Do Something] – The code block to repeat
You can also set up a Do While loop with the Condition at the end of the loop:
Do
[Do Something]
Loop While Condition
We will demo each one and show how they differ:
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Do While
Here is the Do While loop example we demonstrated previously:
Sub DoWhileLoop()
Dim n As Integer
n = 1
Do While n < 11
MsgBox n
n = n + 1
Loop
End Sub
Loop While
Now let’s run the same procedure, except we will move the condition to the end of the loop:
Sub DoLoopWhile()
Dim n As Integer
n = 1
Do
MsgBox n
n = n + 1
Loop While n < 11
End Sub
VBA Do Until Loop
Do Until Loops will repeat a loop until a certain condition is met. The syntax is essentially the same as the Do While loops:
Do Until Condition
[Do Something]
Loop
and similarly the condition can go at the start or the end of the loop:
Do
[Do Something]
Loop Until Condition
Do Until
This do Until loop will count to 10, like our previous examples
Sub DoUntilLoop()
Dim n As Integer
n = 1
Do Until n > 10
MsgBox n
n = n + 1
Loop
End Sub
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Loop Until
This Loop Until loop will count to 10:
Sub DoLoopUntil()
Dim n As Integer
n = 1
Do
MsgBox n
n = n + 1
Loop Until n > 10
End Sub
Exit Do Loop
Similar to using Exit For to exit a For Loop, you use the Exit Do command to exit a Do Loop immediately
Exit Do
Here is an example of Exit Do:
Sub ExitDo_Loop()
Dim i As Integer
i = 1
Do Until i > 1000
If Range("A" & i).Value = "error" Then
Range("A" & i).Select
MsgBox "Error Found"
Exit Do
End If
i = i + 1
Loop
End Sub
End or Break Loop
As we mentioned above, you can use the Exit For or Exit Do to exit loops:
Exit For
Exit Do
However, these commands must be added to your code before you run your loop.
If you are trying to “break” a loop that’s currently running, you can try pressing ESC or CTRL + Pause Break on the keyboard. However, this may not work. If it doesn’t work, you’ll need to wait for your loop to end or, in the case of an endless loop, use CTRL + ALT + Delete to force close Excel.
This is why I try to avoid Do loops, it’s easier to accidentally create an endless loop forcing you to restart Excel, potentially losing your work.
More Loop Examples
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Loop Through Rows
This will loop through all the rows in a column:
Public Sub LoopThroughRows()
Dim cell As Range
For Each cell In Range("A:A")
If cell.value <> "" Then MsgBox cell.address & ": " & cell.Value
Next cell
End Sub
Loop Through Columns
This will loop through all columns in a row:
Public Sub LoopThroughColumns()
Dim cell As Range
For Each cell In Range("1:1")
If cell.Value <> "" Then MsgBox cell.Address & ": " & cell.Value
Next cell
End Sub
Loop Through Files in a Folder
This code will loop through all files in a folder, creating a list:
Sub LoopThroughFiles ()
Dim oFSO As Object
Dim oFolder As Object
Dim oFile As Object
Dim i As Integer
Set oFSO = CreateObject("Scripting.FileSystemObject")
Set oFolder = oFSO.GetFolder("C:Demo)
i = 2
For Each oFile In oFolder.Files
Range("A" & i).value = oFile.Name
i = i + 1
Next oFile
End Sub
Loop Through Array
This code will loop through the array ‘arrList’:
For i = LBound(arrList) To UBound(arrList)
MsgBox arrList(i)
Next i
The LBound function gets the “lower bound” of the array and UBound gets the “upper bound”.
Loops in Access VBA
Most of the examples above will also work in Access VBA. However, in Access, we loop through the Recordset Object rather than the Range Object.
Sub LoopThroughRecords()
On Error Resume Next
Dim dbs As Database
Dim rst As Recordset
Set dbs = CurrentDb
Set rst = dbs.OpenRecordset("tblClients", dbOpenDynaset)
With rst
.MoveLast
.MoveFirst
Do Until .EOF = True
MsgBox (rst.Fields("ClientName"))
.MoveNext
Loop
End With
rst.Close
Set rst = Nothing
Set dbs = Nothing
End Sub
The art of Excel VBA programming is in the manipulation of properties of objects of Excel. The more skillfully you can play with these objects and properties, the more powerful the macros you can build.
The number one object in Excel you have to process is by far the Range object. In this article, I am going to walk you through the critical skills to loop through ranges in Excel worksheets.
Loop through cells in a range
The main skill to loop through a range is with FOR-NEXT loops. There are two FOR-NEXT loop conventions, which are both very useful when we loop through ranges. I would highly recommend to learn both skills.
Method 1: with a range variable
In the Range object, there are many Cell objects. We can therefore think of a Range as a group of Cells. We can effectively use the “For Each element In group” convention of the For-Next statement to loop through every Cell inside a Range.
The macro LoopCells1 loops through every cell in Range “A1:C5” and applies a sequential counter into the content of each cell.
Sub LoopCells1() Dim cell As Range Dim counter As Integer 'loop through each cell object element within a range For Each cell In Range("A1:C5").Cells counter = counter + 1 'denotes the nth cell cell.Value = counter Next End Sub
The result after running the macro looks like this:
Method 2: with a numeric variable
Most VBA users are more confident with the For-Next loop convention of:
For counter = start To end
This convention can also be used to loop through cells within a range. The macro “LoopCells2” demonstrates how to loop through each cell in range A1:C5 by referring to the index number of cells. The loop begins with the index number of 1 to the upper bound which is the total number of cells in the range.
Sub LoopCells2() Dim c As Long Dim counter As Integer 'loop through each cell within a range by calling the index number of the cells For c = 1 To Range("A1:C5").Cells.Count 'put the index number into cell Range("A1:C5").Cells(c).Value = c Next End Sub
The result after running the macro “LoopCells2” looks identical to the result of the previous macro “LoopCells1”.
Important note on numeric variable type
One limitation of this method is with the upper limit of the numeric variable being declared and used in the For-Next loop. There are a few points you need to bear in mind:
- Avoid declaring an Integer typing variable for this purpose because the number of cells in a worksheet is far more than 32,767.
- Declare a Long variable instead, so that the loop can process up to 2,147,483,648 cells, which serves most cases.
- Declaring a Double variable type won’t solve the limitation.
- In case your process exceeded the limit of even a long variable, you will have to restructure your For-Next loop to use the “For Each element In group” convention.
But even with such limitations, this is still a very useful method. It’s often used because, in most situations, the limits of the variable type won’t be reached.
Note on order of cells being processed
When using either of the two methods above, the cells in the range are being processed in the same sequence: from left to right, then from top to bottom. The picture below visualizes such sequence:
If you want the cells to be processed in a different order, you need to learn other strategies which will be explained in the next few sections.
Loop through rows or columns in a range
Sometimes we want to loop through each row in a range (from top to bottom). Similar to looping through cells, we can do it with both conventions of the For-Next statement, either with a range object variable or a numeric variable.
Method 1: with a range variable
Sub LoopRows1() Dim r As Range Dim MyString As String 'Loop through each row, and apply a yellow colow fill For Each r In Range("A1:C5").Rows r.Interior.ColorIndex = 6 Next End Sub
To loop through columns, we just need to change the first line of the For-Next loop to go through the columns instead. In the example below, we want to loop through each column in range A1:C5, and change the column heading to Proper Case (first letter of each word in capital).
Sub LoopColumn1() Dim c As Range Dim MyString As String 'Loop through each column and set first cell to Proper Case For Each c In Range("A1:C5").Columns c.Cells(1).Value = StrConv(c.Cells(1).Value, vbProperCase) Next End Sub
Method 2: with a numeric variable
In this example, we want to loop through every column in a data table. (See picture of our sample data below.) If a column contains numeric data, we set the NumberFormat to 2 decimal places.
'apply 0.00 number format to columns with numeric values Sub FormatNumericColumns() Dim c As Integer Dim MyString As String With Range("A1").CurrentRegion For c = 1 To .Columns.Count 'test 2nd cell of column for numeric value If IsNumeric(.Columns(c).Cells(2).Value) Then .Columns(c).NumberFormat = "0.00" End If Next End Sub
The result of the macro looks like the image below. The number format of the last 3 columns with numeric data has been set to 2 decimal places.
(The dates in the first column are not considered by the VBA IsNumeric function as numeric. Please read my other article all about IsNumeric for more detail on this topic.)
Advanced strategies
Deleting columns (or rows)
Here we want to write a macro to delete the three columns with headings with the word “delete” (the yellow columns). We can tackle this problem with a For-Next loop we learned in the sections above.
First Attempt:
We can try to loop through each column with the “For Each element In group” convention. The macro below looks simple and straight-forward enough, looping through each column (element) within the group of columns in range A1:C5.
Sub DeleteColmns1() Dim c As Range Dim x As Integer With Range("A1:E5") For Each c In .Columns If c.Cells(1).Value = "delete" Then c.Delete End If Next End With End Sub
The result of the macro looks like the picture below. The macro has failed to delete all the three columns.
Reminder: When looping through a range, if you want to apply structural change to the range, NEVER use the “For Each element In group” convention because it may create unexpected results. In some cases, (e.g. insert columns), it will even cause an infinite loop and your Excel may be frozen and you’ll have to force quit Excel and lose your unsaved work.
Second Attempt:
Now, how about using the “For counter = start To end” convention?
Sub DeleteColmns2() Dim tmp As Integer Dim x As Integer With Range("A1:E5") For x = 1 To .Columns.Count If .Columns(x).Cells(1).Value = "delete" Then .Columns(x).Delete End If Next End With End Sub
The result looks identical to that of the previous macro:
If we looked at the result more carefully, we noticed that the original 2nd and 4th column were deleted, but the original 3rd column was not. This was because when the 2nd column was deleted (when x=2), the 3rd column has become the 2nd column which has been skipped when the For-Next loop proceed to process x = 3.
Solution:
So, how do we tackle this problem? The answer is with the For-Next statement convention of “For counter = end To start step -1″, which processes the range from back to front (from the last column backward to the first column).
Sub DeleteColumnFinal() Dim x As Integer With Range("A1").CurrentRegion For x = .Columns.Count To 1 Step -1 If .Columns(x).Cells(1).Value = "delete" Then .Columns(x).Delete End If Next End With End Sub
Loop though every n-th row in a range
We have a data table, and we want to apply a yellow shading (fill) to the odd number rows. And we don’t want to shade the first row which contains the field headings.
Solution 1:
We can use the “For counter = start To end” convention to tackle this problem. We can loop through each row beginning from the 2nd row (which bypassed the field headings). If the row number is odd, we apply a yellow color.
'Shade alternate (even) rows of data Sub ShadeRows1() Dim r As Long With Range("A1").CurrentRegion For r = 1 To .Rows.Count If r / 2 = Int(r / 2) Then 'even rows .Rows(r).Interior.ColorIndex = 6 End If Next End With End Sub
To enhance the macro to shade every n-th row, simply change the 2 in line 5 to n. For example:
If r / 3 = Int(r / 3) Then 'every 3 rows
Solution 2:
We can also use the “For counter = start to end step 2” convention. In the macro “ShadeRows2”, the loop begins from the 2nd row and then the 4th row, then 6th row, etc.
'Shade alternate (odd) rows of data from the 3rd row Sub ShadeRows2() Dim r As Long With Range("A1").CurrentRegion 'begin from 2nd and shade every other row For r = 2 To .Rows.Count Step 2 .Rows(r).Interior.ColorIndex = 6 Next End With End Sub
To enhance the macro to shade every 3rd row, simple change the 2 in line 5 to 3. For example:
For r = 3 To .Rows.Count Step 3
Conclusion
We have gone through in detail the different approaches to loop through a range in VBA, including the pitfalls and a couple of special scenarios. These techniques can also be applied in combination or with other VBA techniques to achieve more powerful automation with worksheet ranges in your macros.
Single Loop | Double Loop | Triple Loop | Do While Loop
Looping is one of the most powerful programming techniques. A loop in Excel VBA enables you to loop through a range of cells with just a few codes lines.
Single Loop
You can use a single loop to loop through a one-dimensional range of cells.
Place a command button on your worksheet and add the following code lines:
Dim i As Integer
For i = 1 To 6
Cells(i, 1).Value = 100
Next i
Result when you click the command button on the sheet:
Explanation: The code lines between For and Next will be executed six times. For i = 1, Excel VBA enters the value 100 into the cell at the intersection of row 1 and column 1. When Excel VBA reaches Next i, it increases i with 1 and jumps back to the For statement. For i = 2, Excel VBA enters the value 100 into the cell at the intersection of row 2 and column 1, etc.
Note: it is good practice to always indent (tab) the code between the words For and Next. This makes your code easier to read.
Double Loop
You can use a double loop to loop through a two-dimensional range of cells.
Place a command button on your worksheet and add the following code lines:
Dim i As Integer, j As Integer
For i = 1 To 6
For j = 1 To 2
Cells(i, j).Value = 100
Next j
Next i
Result when you click the command button on the sheet:
Explanation: For i = 1 and j = 1, Excel VBA enters the value 100 into the cell at the intersection of row 1 and column 1. When Excel VBA reaches Next j, it increases j with 1 and jumps back to the For j statement. For i = 1 and j = 2, Excel VBA enters the value 100 into the cell at the intersection of row 1 and column 2. Next, Excel VBA ignores Next j because j only runs from 1 to 2. When Excel VBA reaches Next i, it increases i with 1 and jumps back to the For i statement. For i = 2 and j = 1, Excel VBA enters the value 100 into the cell at the intersection of row 2 and column 1, etc.
Triple Loop
You can use a triple loop to loop through two-dimensional ranges on multiple Excel worksheets.
Place a command button on your worksheet and add the following code lines:
Dim c As Integer, i As Integer, j As Integer
For c = 1 To 3
For i = 1 To 6
For j = 1 To 2
Worksheets(c).Cells(i, j).Value = 100
Next j
Next i
Next c
Explanation: The only change made compared to the code for the double loop is that we have added one more loop and added Worksheets(c). in front of Cells to get the two-dimensional range on the first sheet for c = 1, the second sheet for c = 2 and the third sheet for c = 3. Download the Excel file to see this result.
Do While Loop
Besides the For Next loop, there are other loops in Excel VBA. For example, the Do While Loop. Code placed between Do While and Loop will be repeated as long as the part after Do While is true.
1. Place a command button on your worksheet and add the following code lines:
Dim i As Integer
i = 1
Do While i < 6
Cells(i, 1).Value = 20
i = i + 1
Loop
Result when you click the command button on the sheet:
Explanation: as long as i is lower than 6, Excel VBA enters the value 20 into the cell at the intersection of row i and column 1 and increments i by 1. In Excel VBA (and in other programming languages), the symbol ‘=’ means becomes. It does not mean equal. So i = i + 1 means i becomes i + 1. In other words: take the present value of i and add 1 to it. For example, if i = 1, i becomes 1 + 1 = 2. As a result, the value 20 will be placed into column A five times (not six because Excel VBA stops when i equals 6).
2. Enter some numbers in column A.
3. Place a command button on your worksheet and add the following code lines:
Dim i As Integer
i = 1
Do While Cells(i, 1).Value <> «»
Cells(i, 2).Value = Cells(i, 1).Value + 10
i = i + 1
Loop
Result when you click the command button on the sheet:
Explanation: as long as Cells(i, 1).Value is not empty (<> means not equal to), Excel VBA enters the value into the cell at the intersection of row i and column 2, that is 10 higher than the value in the cell at the intersection of row i and column 1. Excel VBA stops when i equals 7 because Cells(7, 1).Value is empty. This is a great way to loop through any number of rows on a worksheet.
This post provides a complete guide to the standard VBA For Loop and the VBA For Each Loop.
If you are looking for information about the VBA While and VBA Do Loop then go here.
If you want some quick info about the For loops then check out the Quick Guide table in the section below.
If you are looking for information on a particular topic then check out the Table of Contents below.
“History is about loops and continuums” – Mike Bidlo.
Related Links for the VBA For Loop
The Complete Guide to Ranges in Excel VBA.
The Complete Guide to Copying Data in Excel VBA.
VBA Do While Loop.
A Quick Guide to the VBA For Loop
Loop format | Description | Example |
---|---|---|
For … Next | Run 10 times | For i = 1 To 10 Next |
For … Next | Run 5 times. i=2,4, 6 etc. | For i = 2 To 10 Step 2 Next |
For … Next | Run in reverse order | For i = 10 To 1 Step -1 Debug.Print i Next |
For … Next | Go through Collection | For i = 1 To coll.Count Debug.Print coll(i) Next |
For … Next | Go through array | For i = LBound(arr) To UBound(arr) Debug.Print arr(i) Next i |
For … Next | Go through 2D array | For i = LBound(arr) To UBound(arr) For j = LBound(arr,2) To UBound(arr,2) Debug.Print arr(i, j) Next j Next i |
For Each … Next | Go through Collection | Dim item As Variant For Each item In coll Debug.Print item Next item |
For Each … Next | Go through array | Dim item As Variant For Each item In arr Debug.Print item Next item |
For Each … Next | Go through 2D array | Dim item As Variant For Each item In arr Debug.Print item Next item |
For Each … Next | Go through Dictionary | Dim key As Variant For Each key In dict.Keys Debug.Print key, dict(key) Next key |
Both types | Exit Loop | For i = 1 To 10 If Cells(i,1) = «found» Then Exit For End If Next i |
The VBA For Loop Webinar
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Introduction to the VBA For Loop
Loops are by far the most powerful component of VBA. They are the rocket fuel of your Macros. They can perform tasks in milliseconds that would take humans hours. They also dramatically reduce the lines of code your applications need.
For Loops have been part of all major programming languages since they were first used with Fortan in 1957.
If you have never used loops before then this post is a great place to start. It provides an in-depth guide to loops, written in plain English without the jargon.
Let’s start with a very important question – what are loops and why do we need them?
What are VBA For Loops?
A loop is simply a way of running the same lines of code a number of times. Obviously running the same code over and over would give the same result.
So what is important to understand is that the lines of code normally contain a variable that changes slightly each time the loop runs.
For example, a loop could write to cell A1, then cell A2, A3 and so on. The slight change each time is the row.
Let’s look at a simple example.
VBA For Loop Example 1
The following code prints the values 1 to 5 in the Immediate Window(Ctrl + G to view).
Debug.Print 1 Debug.Print 2 Debug.Print 3 Debug.Print 4 Debug.Print 5
The Immediate Window
If you have not used the Immediate Window before then this section will get you up to speed quickly.
The function Debug.Print writes values to the Immediate Window. To view this window select View->Immediate Window from the menu( the shortcut is Ctrl + G)
VBA For Loop Example 2
Now imagine we want to print out the numbers 1 to 20. We would need to add 15 more lines to the example above.
However, using a loop we only need to write Debug.Print once.
For i = 1 To 20 Debug.Print i Next i
The output is:
Output
If we needed print the numbers 1 to 1000 then we only need to change the 20 to 1000.
Normally when we write code we would use a variable instead of a number like 20 or 1000. This gives you greater flexibility. It allows you to decide the number of times you wish to run the loop when the code is running. The following example explains this.
VBA For Loop Example 3
A common task in Excel is read all the rows with with data.
The way you approach this task is as follows
- Find the last row with data
- Store the value in variable
- Use the variable to determine how many times the loop runs
Using a variable in the loop makes your code very flexible. Your will work no matter how many rows there are.
Let’s have a look at an example. Imagine you receive a sheet with a list of fruit types and their daily sales. You want to count the number of Oranges sold and this list will vary in size depending on sales.
The following screenshot shows an example of this list
Sample Data of Fruit Sales
We can use the code to count the oranges
' https://excelmacromastery.com/ Sub CountFruit() ' Get the last row with text Dim LastRow As Long LastRow = Sheet1.Cells(Sheet1.Rows.Count, 1).End(xlUp).Row Dim i As Long, Total As Long ' Use LastRow in loop For i = 2 To LastRow ' Check if cell has text "Orange" If Sheet1.Cells(i, 1).Value = "Oranges" Then ' Add value in column B to total Total = Total + Sheet1.Cells(i, 2).Value End If Next i ' Print total Debug.Print "Total oranges sold was:"; Total End Sub
You can try this code for yourself. Change the number of fruit items and you will see that the code still works fine.
If you were to increase the number fruit items to a large value like 10,000 then you will hardly notice the difference in the time it takes to run – almost instantly.
Loops are super fast. This is what makes them so powerful. Imagine performing a manual task on 10,000 cells. It would take a considerable amount of time.
Advantages of the VBA For Loop
4To conclude this section we will list the major advantages of using loops
- They reduce the lines code you need
- They are flexible
- They are fast
In the next sections we will look at the different types of loops and how to use them.
The Standard VBA For Loop
The VBA For loop is the most common loop you will use in Excel VBA. The For Loop is used when you can determine the number of times it will be run. For example, if you want to repeat something twenty times.
YouTube Video For Loop
Check out this YouTube Video of the For Loop:
Get the workbook and code for this video here
Format of the Standard VBA For Loop
The Standard VBA For Loop has the following format:
For <variable> = <start value> to <end value>
Next <variable>
The start and end values can be variables. Also the variable after Next is optional but it is useful and it makes it clear which for loop it belongs to.
How a For Loop Works
Let’s look at a simple for loop that prints the numbers 1 to 3
Dim i As Long For i = 1 To 3 Debug.Print i Next i
How this code works is as follows
i is set to 1
The value of i(now 1) is printed
i is set to 2
The value of i(now 2) is printed
i is set to 3
The value of i(now 3) is printed
If we did not use a loop then the equivalent code would be
Dim i As Long i = i + 1 Debug.Print i i = i + 1 Debug.Print i i = i + 1 Debug.Print i
The i = i + 1 line is used to add 1 to i and is a common way in programming to update a counter.
Using Step with the VBA For Loop
You can see that i is increased by one each time. This is the default. You can specify this interval using Step keyword.
The next example shows you how to do this:
' Prints the even numbers i.e. 2,4,6,8 ... 20 For i = 2 To 20 Step 2 Debug.Print i Next i
You can use a negative number with Step which will count in reverse
' Prints the even numbers in reverse i.e. 20,18,16,14 ... 2 For i = 20 To 2 Step -2 Debug.Print i Next i
Note: if Step is positive then your starting number must be lower than you ending number. The following loop will not run because the starting number 20 is greater than 10. VBA therefore, thinks it has already reached the target value 10.
' Will not run as starting number already greater than 10 For i = 20 To 10 Step 1 Debug.Print i Next i
If Step is negative then the start number must be greater than the end number.
Exit the For Loop
Sometimes you may want to leave the loop earlier if a certain condition occurs. For example if you read bad data.
You can use Exit For to automatically leave the loop as shown in the following code
For i = 1 To 1000 ' If cell is blank then exit for If Cells(i, 1) = "" Then MsgBox "Blank Cell found - Data error" Exit For End If Next i
Using the VBA For Loop with a Collection
The For loop can also be used to read items in a Collection.
In the following example, we display the name of all the open workbooks
Dim i As Long For i = 1 To Workbooks.Count Debug.Print Workbooks(i).FullName Next i
Using Nested For Loops
Sometimes you may want to use a loop within a loop. An example of this would be where you want to print the names of the worksheets of each open workbook.
The first loop would go through each workbook. Each time this loop runs it would use a second loop to go through all the worksheets of that workbook. It is actually much easier to do than it sounds.
The following code shows how:
' https://excelmacromastery.com/ Sub ListWorksheets() Dim i As Long, j As Long ' First Loop goes through all workbooks For i = 1 To Workbooks.Count ' Second loop goes through all the worksheets of workbook(i) For j = 1 To Workbooks(i).Worksheets.Count Debug.Print Workbooks(i).Name + ":" + Worksheets(j).Name Next j Next i End Sub
This works as follows:
The first loop sets i to 1
The second loop then uses the workbook at 1 to go through the worksheets.
The first loop sets i to 2
The second loop then uses the workbook at 2 to go through the worksheets.
and so on
It the next section we will use a For Each loop to perform the same task. You will find the For Each version much easier to read.
The VBA For Each Loop
The VBA For Each loop is used to read items from a collection or an array. We can use the For Each loop to access all the open workbooks. This is because Application.Workbooks is a collection of open workbooks.
This is a simple example of using the For Each Loop
Dim wk As Workbook For Each wk In Workbooks Debug.Print wk.FullName Next wk
Format of the VBA For Each Loop
You can see the format of the VBA for each loop here(See Microsoft For Each Next documentation):
For Each <variable> in <collection>
Next <variable>
To create a For Each loop we need a variable of the same type that the collection holds. In the example here we created a variable of type Workbook.
If the collection has different types of items we can declare the variable as a variant.
VBA contains a collection called Sheets. This is a collection of sheets of type Worksheet(normal) and Chart(when you move a chart to be a full sheet). To go through this collection you would declare the variable as a Variant.
The following code uses For Each to print out the name of all the sheets in the current workbook
Dim sh As Variant For Each sh In ThisWorkbook.Sheets Debug.Print sh.Name Next sh
Order of Items in the For Loop
For Each goes through items in one way only.
For example, if you go through all the worksheets in a workbook it will always go through from left to right. If you go through a range it will start at the lowest cell e.g. Range(“A1:A10”) will return A1,A2,A3 etc.
This means if you want any other order then you need to use the For loop.
Both loops in the following example will read the worksheets from left to right:
' Both loops read the worksheets from left to right Dim wk As Worksheet For Each wk In ThisWorkbook.Worksheets Debug.Print wk.Name Next Dim i As Long For i = 1 To ThisWorkbook.Worksheets.Count Debug.Print ThisWorkbook.Worksheets(i).Name Next
As you can see the For Each loop is neater to write. However if you want to read the sheets in any other order e.g. right to left then you have to use the for loop:
' Reading the worksheets from right to left Dim i As Long For i = ThisWorkbook.Worksheets.Count To 1 Step -1 Debug.Print ThisWorkbook.Worksheets(i).Name Next
Using the VBA For Each Loop With Arrays
One thing to keep in my is that the For Each loop is that it is read-only when you use it with arrays.
The following example demonstrates this:
' https://excelmacromastery.com/ Sub UseForEach() ' Create array and add three values Dim arr() As Variant arr = Array("A", "B", "C") Dim s As Variant For Each s In arr ' Changes what s is referring to - not value of array item s = "Z" Next ' Print items to show the array has remained unchanged For Each s In arr Debug.Print s Next End Sub
In the first loop we try to assign s to “Z”. When happens is that s is now referring the string “Z” and no longer to the item in the array.
In the second loop we print out the array and you can see that none of the values have changed.
When we use the For Loop we can change the array item. If we change the previous code to use the For Loop you it will change all the array values to “Z”
' https://excelmacromastery.com/ Sub UsingForWithArray() ' Create array and add three values Dim arr() As Variant arr = Array("A", "B", "C") Dim i As Long For i = LBound(arr) To UBound(arr) ' Changes value at position to Z arr(i) = "Z" Next ' Print items to show the array values have change For i = LBound(arr) To UBound(arr) Debug.Print arr(i) Next End Sub
If your Collection is storing Objects the you can change the items using a For Each loop.
Using Nested For Each Loops
We saw already that you can have a loop inside other loops. Here is the example from above:
' https://excelmacromastery.com/ Sub ListWorksheets() Dim i As Long, j As Long ' First Loop goes through all workbooks For i = 1 To Workbooks.Count ' Second loop goes through all the worksheets of workbook(i) For j = 1 To Workbooks(i).Worksheets.Count Debug.Print Workbooks(i).Name + ":" + Worksheets(j).Name Next j Next i End Sub
This time we will use the For Each loop to perform the same task:
' https://excelmacromastery.com/ Sub ReadAllWorksheets() Dim wk As Workbook, sh As Worksheet ' Read each workbook For Each wk In Workbooks ' Read each worksheet in the wk workbook For Each sh In wk.Worksheets ' Print workbook name and worksheet name Debug.Print wk.Name + ": " + sh.Name Next sh Next wk End Sub
As you can see this is a neater way of performing this task than using the For Loop:
This code run as follows:
- Get the first Workbook from the Workbooks collection
- Go through all the worksheets in this workbook
- Print the workbook/worksheet details
- Get the next workbooks in the collection
- Repeat steps 2 to 3
- Continue until no more workbooks are left in the collection
How to Loop Through a Range
In Excel VBA, the most common use of a For Loop is to read through a range.
Imagine we have the data set in the screenshot below. Our task is to write code that will read through the data and copy the amounts to the column J. We are only going to copy amounts that are greater than 200,000.
The following example shows how we do it:
' Read through an Excel Range using the VBA For Loop ' https://excelmacromastery.com/ Sub ForLoopThroughRange() ' Get the worksheet Dim sh As Worksheet Set sh = ThisWorkbook.Worksheets("Sheet1") ' Get the Range Dim rg As Range Set rg = sh.Range("A1").CurrentRegion ' Delete existing output sh.Range("J1").CurrentRegion.ClearContents ' Set the first output row Dim row As Long row = 1 ' Read through all the rows using the For Loop Dim i As Long For i = 2 To rg.Rows.Count ' Check if amount is greater than 200000 If rg.Cells(i, 4).Value > 200000 Then ' Copy amount to column m sh.Cells(row, "J").Value = rg.Cells(i, 4).Value ' Move to next output row row = row + 1 End If Next i End Sub
This is a very basic example of copying data using Excel VBA. If you want a complete guide to copying data using Excel VBA then check out this post
Summary of the VBA For Loops
The Standard VBA For Loop
- The For loop is slower than the For Each loop.
- The For loop can go through a selection of items e.g. 5 to 10.
- The For loop can read items in reverse e.g. 10 to 1.
- The For loop is not as neat to write as the For Each Loop especially with nested loops.
- To exit a For loop use Exit For.
The VBA For Each Loop
- The For Each loop is faster than the For loop.
- The For Each loop goes through all items in the collectionarray.
- The For Each loop can go through items in one order only.
- The For Each loop is neater to write than a For Loop especially for nested loops.
- To exit a For Each loop use Exit For.
What’s Next?
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If you’re looking to automate your Excel spreadsheets, macros are a good way to do so. Macros are automated scripts, typically written using Visual Basic for Applications (VBA), to help you perform certain actions in Excel, such as automate a button press or perform a calculation.
VBA is a useful programming language for new data analysts to learn as it supercharges the functionality of Excel, making it easier to perform certain tasks automatically (and repeatedly) with custom-made macro scripts. For instance, if you want a macro that repeats an action by a certain number of times, you can use a VBA For Loop.
Loops like this aren’t unique to VBA—indeed, they’re a common feature in most programming languages, allowing a program or script to run continuously in a sequence with a start and end point. For Excel data analysts, a VBA For Loop can allow you to loop through cells or perform a set number of actions once the criteria to do so are met.
This could be once a certain calculation is inserted or value reached, or when you perform a certain action in your spreadsheet itself (such as, for instance, pressing a custom-inserted button). Using a VBA For Loop is essential for creating macros that will run continuously as you work through your spreadsheet.
If you’re new to VBA programming and you’re looking to create a basic (or even advanced) macro using a VBA For Loop, this guide should help you. In this article, we’ll explain:
- What are VBA For Loops in Microsoft Excel and what are they used for?
- How do VBA For Loops work in Excel?
- Things to consider before using a VBA For Loop in Excel
- How to add a VBA For Loop in Excel using the Visual Basic Editor
How do VBA For Loops work in Excel? Let’s get familiar with the basics.
1. What are VBA For Loops in Microsoft Excel and what are they used for?
As we’ve mentioned already, loops are a programming concept that allows a program to repeat itself. They help to refract your code, reducing the number of specifically-coded actions that are written to help improve the speed and efficiency of your applications.
Loops are flexible tools, giving you the option to repeat a certain action (such as changing cell values) a set number of times. A loop could also be combined with other statements, such as For and If, that help to determine how often, and for how long, a script should run.
In VBA, a For Loop repeats an action (or set of actions) for a set number of times in a sequence. For instance, if you had a macro (written in VBA) that inserted values into a column, you could use a For Loop to do so, filling each cell sequentially (eg. A1, A2, A3, etc) until an end value is reached.
For instance, the VBA code snippet shown previously demonstrates such an action. In this example, the VBA macro is designed to insert values into cells in column A, from 1 to 10, and increase in single-digit increments. Once 10 is reached, the script stops.
This is a basic example, but For Loops are powerful enough to perform almost any action you desire in Excel repeatedly. While this guide isn’t a full VBA tutorial (and it assumes you have a certain level of basic VBA experience already), it should allow you to create basic VBA loops using For to repeat an action in sequence.
2. How do VBA For Loops work in Excel?
Let’s assume that you already have an idea in mind as to how your VBA macro should work. Introducing a For Loop into the mix allows you to set your code (or part of your code) to repeat itself a certain number of times.
We’ll explain the process using a simple-to-understand example. As VBA For Loops are useful for finite repetitive actions, let’s assume you want a pop-up to appear when you press a button (with the class name Button).
Pressing the button causes a pop-up box to appear a set number of times, in sequence, using the variable varButton as the end number (in this case, 10). This pop-up box displays the current variable, starting with zero. It then repeats this 9 more times until the varButton variable (10) is reached.
The action of pressing the button begins the loop. As the test has a start and end variable, the loop has a finite number of runs before it finishes. By default, the values increase by 1 (starting with 0, 1, 2, etc) but this can be changed by adding a Step value. For instance, changing this to 5 would mean only three pop-ups appear.
Once the end value is reached, the loop exits and the macro stops. You could, however, add additional actions to perform at this point, such as changing another cell’s value or creating a different pop-up message. You could nest the For Loop within other logical tests, such as a Do While or If statement.
This example contains all of the typical criteria needed to complete a For Loop using VBA, however. The code identifies how many times the action will be performed in a sequence (varButton) and the increment value used to iterate through the sequence (Step).
The only optional part of this example is the button used to start the macro. You don’t necessarily need to link your macro code to a button press, as you could easily begin this loop and activate the macro manually by pressing Developer > Macros > Run instead.
3. Things to consider before using a VBA For Loop in Excel
A VBA For Loop is a flexible and wide-ranging method that allows your code to perform an action sequentially and only stopping if (and when) certain criteria are met. To help you create this kind of macro in Excel, there are some pointers you’ll need to consider. These include:
- If you want to create a way for your For Loop to end before the final value is reached, you’ll need to add an Exit For statement to your code. This exits the loop and moves on to the next line of code outside of the loop (if your code continues). For instance, you could stop the loop when you press a button.
- A VBA For Loop can be used to cycle through a set number of numerical values in sequence in a basic way using a For Next Loop, but you can also cycle through more complex objects (such as workbooks in your spreadsheet) in sequence using a more complex VBA For Each Loop.
- VBA For Loops can be nested with other logical statements, such as an If or Do While statement. This allows you to integrate more complex decision-making into your code.
- A VBA For Loop will iterate in a sequence, but by changing the Step value, you can change how much the loop counter increases by during each iteration. For instance, if you want your loop to move ahead in a sequence that increases the value by 2, you’d need to use a Step value of 2. If you don’t provide a Step value, the loop counter will increase in increments of 1.
- If your VBA For Loop can’t be performed, or if your code has errors, VBA will exit into debug mode with an error. You’ll need to troubleshoot your code to fix this problem in Excel’s built-in VBA Editor.
While these examples are important, you should also consider any known VBA limitations that aren’t listed here (such as a lack of an undo function when using VBA) before you write your code.
4. How to add VBA For Loops in Excel using the Visual Basic Editor
You can create, test, and run a VBA For Loop in Excel by using the Visual Basic Editor. This is Excel’s built-in VBA editor that allows you to create your own macros using VBA, or edit existing macros created using the Macro Recorder tool.
To begin creating a VBA macro using a For Loop in the Visual Basic Editor, you can follow these steps:
Step 1: Open the VBA Editor
You’ll need to start by opening the Visual Basic Editor in your Excel workbook.
You can do this by pressing the Alt + F11 keys on your keyboard (or Option + F11 on Mac). If you’ve already enabled the Developer tab on the ribbon bar in your Excel’s settings menu, you can also press Developer > Visual Basic to open the editor instead.
Step 2: Create a new VBA Module
The VBA Editor will open in a new window at this point. The next step is to insert your VBA For Loop (and additional code) as a new VBA module. Modules are used to organize VBA code into groups.
To do this, right-click your workbook listed in the tree menu on the left. From the drop-down menu, select Insert > Module.
Step 3: Insert your VBA For Loop code
A new window for your code will appear on the right. This is where you can type or insert the VBA code containing your For Loop. For instance, the following code will insert sequential values into cells A1 to A20 on any active worksheet:
Sub LoopVal()
Dim i As Integer
For i = 1 To 10
Range(“A” & i).Value = i
Next i
End Sub
Step 4: Rename your module and test your code
Once you’ve inserted your code, you’ll need to rename the module which contains the code in order to make it easy to refer to later. To do this, select the module name in the tree menu on the left, then rename it by typing a new module name into the Properties box underneath.
When you’re ready to test your code, press the Run Sub/User Form button. This will run the code in your active worksheet, allowing you to see the macro in action.
Assuming your VBA code worked as intended, you can then proceed to save your workbook with the macro included. If it doesn’t work, a debug message will appear, and you’ll need to troubleshoot the issue further.
Step 5: Save your workbook
With your VBA macro ready, you’ll need to save your Excel workbook as a Macro-enabled workbook in the XLSM format. To do this, press Ctrl + S on your keyboard, or press File > Save As.
Step 6: Run your VBA code
Your macro (containing a VBA For Loop) is ready to run once you’ve saved your workbook. To do this, press Alt + F8 on your keyboard to open the Macro window (or Option + F8 on Mac).
Select your macro (matching the Module name) from the list provided, then press Run. Alternatively, if your VBA For Loop is scheduled to activate based on another action (such as a cell value being reached, a button being pressed, etc), you’ll need to perform this action to begin the process.
Final thoughts
Once you’ve mastered VBA For Loops, you can take things further by experimenting with Do Until Loops, custom worksheet events, and more. VBA tricks like these allow data analysts to create complex applications inside Excel workbooks that can automate tasks or speed up calculations, but you’ll need to master VBA first.
If you’re new to Excel or you’re interested in a career in data analysis, our five-day short course can help you learn more about the fundamentals. If you’re curious to learn more about Excel, you can check out these articles next:
- How to use conditional formatting in Excel
- How to calculate variance in Excel
- How to convert texts to numbers in Excel