Is not number function in excel

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Description

Each of these functions, referred to collectively as the IS functions, checks the specified value and returns TRUE or FALSE depending on the outcome. For example, the ISBLANK function returns the logical value TRUE if the value argument is a reference to an empty cell; otherwise it returns FALSE.

You can use an IS function to get information about a value before performing a calculation or other action with it. For example, you can use the ISERROR function in conjunction with the IF function to perform a different action if an error occurs:

=
IF(
ISERROR(A1), «An error occurred.», A1 * 2)

This formula checks to see if an error condition exists in A1. If so, the IF function returns the message «An error occurred.» If no error exists, the IF function performs the calculation A1*2.

Syntax

ISBLANK(value)

ISERR(value)

ISERROR(value)

ISLOGICAL(value)

ISNA(value)

ISNONTEXT(value)

ISNUMBER(value)

ISREF(value)

ISTEXT(value)

The IS function syntax has the following argument:

value Required. The value that you want tested. The value argument can be a blank (empty cell), error, logical value, text, number, or reference value, or a name referring to any of these.

Function	Returns TRUE if
ISBLANK	Value refers to an empty cell.
ISERR	Value refers to any error value except #N/A.
ISERROR	Value refers to any error value (#N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!).
ISLOGICAL	Value refers to a logical value.
ISNA	Value refers to the #N/A (value not available) error value.
ISNONTEXT	Value refers to any item that is not text. (Note that this function returns TRUE if the value refers to a blank cell.)
ISNUMBER	Value refers to a number.
ISREF	Value refers to a reference.
ISTEXT	Value refers to text.

Remarks

The value arguments of the IS functions are not converted. Any numeric values that are enclosed in double quotation marks are treated as text. For example, in most other functions where a number is required, the text value «19» is converted to the number 19. However, in the formula ISNUMBER(«19»), «19» is not converted from a text value to a number value, and the ISNUMBER function returns FALSE.
The IS functions are useful in formulas for testing the outcome of a calculation. When combined with the IF function, these functions provide a method for locating errors in formulas (see the following examples).

Examples

Example 1

Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.

Formula	Description	Result
=ISLOGICAL(TRUE)	Checks whether TRUE is a logical value	TRUE
=ISLOGICAL(«TRUE»)	Checks whether «TRUE» is a logical value	FALSE
=ISNUMBER(4)	Checks whether 4 is a number	TRUE
=ISREF(G8)	Checks whether G8 is a valid reference	TRUE
=ISREF(XYZ1)	Checks whether XYZ1 is a valid reference	FALSE

Example 2

Data
Gold
Region1
#REF!
330.92
#N/A
Formula	Description	Result
=ISBLANK(A2)	Checks whether cell A2 is blank.	FALSE
=ISERROR(A4)	Checks whether the value in cell A4, #REF!, is an error.	TRUE
=ISNA(A4)	Checks whether the value in cell A4, #REF!, is the #N/A error.	FALSE
=ISNA(A6)	Checks whether the value in cell A6, #N/A, is the #N/A error.	TRUE
=ISERR(A6)	Checks whether the value in cell A6, #N/A, is an error.	FALSE
=ISNUMBER(A5)	Checks whether the value in cell A5, 330.92, is a number.	TRUE
=ISTEXT(A3)	Checks whether the value in cell A3, Region1, is text.	TRUE

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Return value

A logical value (TRUE or FALSE)

Usage notes

The ISNUMBER function returns TRUE when a cell contains a number, and FALSE if not. You can use ISNUMBER to check that a cell contains a numeric value, or that the result of another function is a number.

The ISNUMBER function takes one argument, value, which can be a cell reference, a formula, or a hardcoded value. Typically, value is entered as a cell reference like A1. When value is a number, the ISNUMBER function will return TRUE. Otherwise, ISNUMBER will return FALSE.

Examples

The ISNUMBER function returns TRUE if value is numeric:

=ISNUMBER("apple") // returns FALSE
=ISNUMBER(100) // returns TRUE

If cell A1 contains the number 100, ISNUMBER returns TRUE:

=ISNUMBER(A1) // returns TRUE

If a cell contains a formula, ISNUMBER checks the result of the formula:

=ISNUMBER(2+2) // returns TRUE
=ISNUMBER(2^3) // returns TRUE
=ISNUMBER(10 &" apples") // returns FALSE

Note: the ampersand (&) is the concatenation operator in Excel. When values are concatenated, the result is text.

Count numeric values

To count cells in a range that contain numbers, you can use the SUMPRODUCT function like this:

=SUMPRODUCT(--ISNUMBER(range))

The double negative coerces the TRUE and FALSE results from ISNUMBER into 1s and 0s and SUMPRODUCT sums the result.

Notes

ISNUMBER will return TRUE for Excel dates and times since they are numeric.
ISNUMBER will return FALSE for empty cells and errors.

Источник

ISNUMBER Function in Excel

ISNUMBER function in excel is an information function that checks if the referred cell value is numeric or non-numeric. Its output is a boolean value (“True,” if the “value” parameter is numeric or “False” if the “value” parameter is non-numeric)

Syntax

The ISNUMBER formula is stated as follows:

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For eg:
Source: ISNUMBER in Excel (wallstreetmojo.com)

The ISNUMBER formula has only one parameter, the “value.”

Value: It is a flexible parameter. It can be another function or formula, a cell, or value that needs testing if it is numeric or not.

The ISNUMBER formula returns the following logical values:

“True,” if the “value” parameter is numeric.
“False,” if the “value” parameter is non-numeric.

The formula is represented in the following format.

“=ISNUMBER(Reference Cell)”

The argument “reference cell” refers to the cell which we want to check or identify.

Let us consider the following ISNUMBER formula.

“=ISNUMBER(T1XT)”

The output is “false,” as the argument T1XT does not have numbers in it.

ISNUMBER Function in Excel
- Syntax
- Characteristics of ISNUMBER Function
- How to Use the ISNUMBER Function in Excel?
- How to use Excel ISNUMBER Function and the SEARCH Function?
- Frequently Asked Questions (FAQs)
- ISNUMBER in Excel Video
- Recommended Articles

Characteristics of ISNUMBER Function

It returns a Boolean value (“true” or “false”).
It finds its usage as a worksheet (WS) function.
It is a part of IS functions group of Excel.

How to Use the ISNUMBER Function in Excel?

Let us understand the uses of this function with few examples of actual data.

You can download this ISNUMBER Function Excel Template here – ISNUMBER Function Excel Template

Let us enter a few values given in the table below and test the behavior of the ISNUMBER function.

How to use Excel ISNUMBER Function and the SEARCH Function?

The ISNUMBER function, together with the SEARCH function, checks if a cell contains a specific sub-string among the text string.

SEARCH function in ExcelSearch function gives the position of a substring in a given string when we give a parameter of the position to search from. As a result, this formula requires three arguments. The first is the substring, the second is the string itself, and the last is the position to start the search.read more will return the position (or index) of a specified substring within a text string. It belongs to the Excel TEXT functions category. It allows running a case-insensitive search on text and supports the usage of wild cards.

We will understand how the ISNUMBER function works together with the SEARCH function in the following example.

Let us use other functions (e.g., SEARCH function) as parameters for the ISNUMBER function and test its behavior (as shown in the table below).

Consider the ISNUMBER formula mentioned in the table,

“=ISNUMBER(SEARCH(B14,A14))”

Now, we will observe how this formula works,

At first, the SEARCH function looks for the substring “Excel” (B14) in the specified cell (A14). It returns the position of the substring as 12. If the substring is not found, it returns an error value (#VALUE).
Then, the ISNUMBER function checks whether the SEARCH function returns a numeric value; if yes, the output is “true.” If the SEARCH shows an error value (non-numeric), then ISNUMBER returns “false.”

Frequently Asked Questions (FAQs)

What is the Excel ISNUMBER function?

The ISNUMBER function checks if a cell contains a number or not. It returns “true” if the value is numeric, and if not, it returns a “false.”

How to use ISNUMBER in Excel?

We use the ISNUMBER function to test if a value is a number. It will return “true” when the value is numeric and “false” when non-numeric.
Let us consider the syntax “=ISNUMBER(G1).” It returns “true” if the argument “G1” contains a number or a formula that returns a numeric value. It returns “false” if the argument “G1” contains the text.

How do ISNUMBER and ISTEXT functions differ?

The ISNUMBER function helps to check whether a value in a cell or a value resulting from another formula is a number. The output of ISNUMBER is either “true” or “false.”
The ISTEXT function checks whether a value is a text or not. The result of this function is also either “true” or “false.” Moreover, using this function, you can find if a value in a cell is a numeric value entered as text.

• The ISNUMBER function is an information function used to find if the cell value in reference is a numerical value or not. It returns values as “true” or “false.”

• The formula for the ISNUMBER function is “=ISNUMBER (value).”

• It is a worksheet (WS) function in Excel.

• It is a Boolean function of Excel which gives the output as “true” or “false.”

• The ISNUMBER function along with the Excel SEARCH function, checks if a cell contains a specific text among the content of the cell.

ISNUMBER in Excel Video

Uses of ISNUMBER Function

ISNUMBER Function returns TRUE if a cell contains a number; otherwise, it returns FALSE. If a cell contains a TEXT, the function will return a FALSE. A cell contains a number or not, or if we want to check the result of any function is number, in these scenarios, we use ISNUMBER Function.

ISNUMBER Formula in Excel

Below is the ISNUMBER Formula in Excel :

Where the passing argument is:

Value – The value which you want to check.

Note:

The ISNUMBER function returns TRUE if a value is a valid number.
The ISNUMBER function returns FALSE if the value is not a valid number like text, date, time, etc.

As a Worksheet function, it can be entered as a part of a formula in a cell. Thus, it can be used as below screenshot:

Where is it Found in Excel?

ISNUMBER Function is a built-in function in excel; hence it is found under the FORMULAS tab in excel. Please follow the below steps:

Click on the FORMULAS tab.

Select the More Functions option.

It will open a drop-down list of functions category. Click on the Information tab.

After clicking on the Information tab, it will again open a drop-down list of functions. Click on the ISNUMBER function.

It will open a dialog box for Function arguments.

Enter the Value field with the value, which you want to check.

How to Use ISNUMBER Function in Excel?

This function is very simple and easy compared to other functions in Microsoft Excel, which contains lots of arguments or parameters.

You can download this ISNUMBER Function Excel Template here – ISNUMBER Function Excel Template

Example #1

We have given the below data.

Now we will apply the ISNUMBER function on the above data:

The Result will be :

Drag & drop this formula for the rest data, and the final result is shown below:

Explanation:

If the supplied argument or value is a number, the ISNUMBER function will return TRUE. Like for value = 150, ISNUMBER(150) will return TRUE.
If the value is text, character, sentence, special character, or any value other than a number, the ISNUMBER function will return FALSE. Like for Value = “$”, ISNUMBER($) will return FALSE.

Example #2

Let’s take some mathematical expression:

Now we will apply the ISNUMBER Function on the above expressions to check that the result of these expressions is numeric or not.

The Result will be :

Apply the same rule for the rest values, and the final result is shown below:

Explanation:

The supplied value is the mathematical expression; hence the ISNUMBER function return as TRUE.

Things to Remember

If the supplied value is Excel date and time, the ISNUMBER function will return TRUE because they are numeric.
If a value is text or supplied number is entered as text, the ISNUMBER function will return FALSE.
Where there is a large amount of data, the ISNUMBER is very helpful. It helps in testing if the result of any function is a number or not.
The ISNUMBER function is a part of IS Functions that return TRUE or FALSE.
This function will never return any error value like #NAME!, #N/A! etc.

How to use ISNUMBER in Excel

The Excel ISNUMBER function lies in the category of information functions. Its syntax is pretty simple and easy to use.

ISNUMBER checks a cell to see if the given value is a number. The value could be a simple number or the result of a formula.

It returns TRUE or FALSE and is often used in combination with other formulas. Let’s see the syntax below.

=ISNUMBER(value)

The ISNUMBER syntax only uses a single argument – value.

The value argument is the value we want to check. It can be a formula, cell reference, number, or anything else 🔟

To see how the ISNUMBER function works, read on.

We will apply the formula to the following data set.

Few examples of numeric value for ISNUMBER

Here’s the result the ISNUMBER function returns.

As evident, column A contains the values to be checked. Column B contains the results of the function and column C shows the formula used.

Column B returns TRUE for all numerical values and FALSE for all text strings.

Note that the ISNUMBER function returns FALSE for the number #854. That’s because it is not a number. The value is left aligned by default, indicating that it is not a number but stored as text instead.

Kasper Langmann, Microsoft Office Specialist

ISNUMBER and IF formula example

Let’s see an example of the ISNUMBER and IF function 🤓

We have the following example data.

We want to find the salary of an employee in row 6 in the given data set.

But we want to keep the data private. To do that, we have used the IF function that will return the salary amount only if we use ID No.

If anyone tries to find the salary using names, the function will return an empty cell value.

The ISNUMBER function becomes important here as it checks if the given cell value is a number. If the selected cell is not a number, it will return a blank cell.

Let’s see this in action now, shall we? 👀

Select a cell.
Apply the formula as:

=IF(

Add the ISNUMBER formula and cell value to check.

=IF(ISNUMBER(A6)

Enter the value_if_true and value_if_false arguments as:

=IF(ISNUMBER(A6), C6, ” “)

Press Enter.

And tada! Excel returns the expected result.

That’s because cell A6 contains a number, and we get the score corresponding to that ID No.

If we had used a cell reference containing a text string, for instance, cell B6, the function would return a blank cell. See the image below for reference.

Error value for using cell reference with

As expected, we get an empty cell because cell B6 contains a text string.

Pretty simple, no? 😉

ISNUMBER SEARCH formula example

The SEARCH function looks up a cell for a specific substring. It returns the location of the value, but when compared with ISNUMBER, it returns the answer as TRUE or FALSE.

Let’s see an example of using the ISNUMBER and SEARCH functions together.

We have the following sample data.

Say we want to see if Roll No. 20 exists in cell B5. To do that:

Select a cell.
Enter the formula as:

=ISNUMBER(

Add the SEARCH function.

=ISNUMBER(SEARCH(

Enter the Roll No. and row you want to look for its location.

=ISNUMBER(SEARCH(20, B5)

Press Enter.

Excel returns the result as TRUE.

Note that if we had used the SEARCH function alone, it would have returned a value “1”. But since we used it in combination with the ISNUMBER function, it returned TRUE.

That’s because the value is a number and exists in a specified location. If any of these conditions had not been fulfilled, Excel would have returned FALSE.

Kasper Langmann, Microsoft Office Specialist

How to use ISTEXT in Excel

The ISTEXT function is similar to ISNUMBER. They have the same syntax arguments and perform the same kind of operation.

The only difference is that the ISTEXT function checks a cell for a text value, as evident from the name. It returns TRUE for text strings and FALSE for numeric values.

Its syntax is as follows:

=ISTEXT(value)

where value is the value to be checked.

We will use the previously used example data for the ISTEXT function.

Upon applying the ISTEXT function, we get the results:

The ISTEXT function returns TRUE for text values and FALSE for numbers.

Note that ISTEXT returns TRUE for the value #854. This proves that it is a text value as seen in the earlier ISNNUMBER example.

ISTEXT and IF formula example

Let’s see an example of the ISTEXT function with IF.

We will use the following example data.

We want to find the salary of Peter, but we don’t want to use his ID No. 😕

To do that, we will use the ISTEXT function, which will only show the salary when we enter his name. If anyone tries to check the salary using his ID No., it will return a blank cell.

Let’s see how to do it below.

Select a cell.
Enter the formula as:

=IF(

Enter the ISTEXT function.

=IF(ISTEXT(

Add the arguments for ISTEXT and IF functions.

=IF(ISTEXT(B7, C7, ” “)

Press Enter.

Excel returns the result as:

If the cell reference used in ISTEXT function contained a number, the result would have been something like this:

Error occurs. Function returns empty cell

As visible, the ISTEXT function returns a blank cell because cell A7 is not a text string.

How to use ISNONTEXT

The ISNONTEXT and ISNUMBER functions are identical. Both have the same purpose and the same syntax.

The ISNONTEXT function returns TRUE when a cell contains a numerical value. If it is a text string, it will return FALSE – same as in the case of ISNUMBER.

Syntax of the ISNONTEXT function is:

=ISNONTEXT(value)

Where value refers to the value to be checked.

It’s that simple to use.

A couple of tries are all you need to master this function 🧐

That’s it – Now what?

In this article, we learned how to use the ISNUMBER and ISTEXT functions. We also saw how to use the ISNONTEXT function and its uses in the practical world.

These functions are easy to learn and use. But identifying the utility of ISNUMBER and ISTEXT can be slightly difficult on the surface.

The power of these functions is unleashed when they are combined with other functions. You’ve already seen a quick glance through our examples. A little practice can help you master these functions in no time.

Some common functions you can combine the ISNUMBER and ISTEXT functions with include VLOOKUP, IF, SUMIF and others.

You can learn them in my 30-minute free email course that teaches these functions and more. It’s delivered right to your inbox only at the cost of your email address. So join now! 🤗

Frequently asked questions

The ISNUMBER function in Excel is used to check whether a given value is a number or text. If the value in a cell is a numerical value, it returns TRUE. And if it is text, it returns FALSE. It is usually used in combination with other functions like IF and VLOOKUP, etc.

The Excel ISTEXT function checks whether a certain value is a text or a number. It returns TRUE if the value is a text string and FALSE if it is a number. The ISTEXT function is easy to use and is used with other functions.

Kasper Langmann2023-02-23T14:53:33+00:00

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Источник

Description

Syntax

Remarks

Examples

Example 1

Need more help?

Return value

Usage notes

Examples

Count numeric values

Notes

ISNUMBER Function in Excel

Syntax

Table of contents

Characteristics of ISNUMBER Function

How to Use the ISNUMBER Function in Excel?

How to use Excel ISNUMBER Function and the SEARCH Function?

Frequently Asked Questions (FAQs)

ISNUMBER in Excel Video

Recommended Articles

Uses of ISNUMBER Function

Where is it Found in Excel?

How to Use ISNUMBER Function in Excel?

Example #1

Example #2

Things to Remember

Recommended Articles

How to Use the Excel Functions ISNUMBER, ISTEXT and ISNONTEXT

How to use ISNUMBER in Excel

ISNUMBER and IF formula example

ISNUMBER SEARCH formula example

How to use ISTEXT in Excel

ISTEXT and IF formula example

How to use ISNONTEXT

That’s it – Now what?

Frequently asked questions