When To Use Capital Letters
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Some English capitalization rules are rigid, but others are a matter of style. We’ll go over the most common “capitalization” guidelines.
- Capitalization is when certain letters are written in uppercase instead of lowercase.
- There are several rules to keep in mind when deciding when to use capital letters.
- ○ Mrs. Johnson states that our homework assignments are due every week on Friday.
The rules of capitalization in English may seem pretty direct. For example, most people know to capitalize the first letter of every sentence and the personal pronoun “I.” There are some gray areas, though. Should sentences after colons begin with a capital letter, too? How about titles and headlines? We’ll answer these questions and go over some basic guidelines for capitalization.
1. “Capitalizing” the First Word of a Sentence
This one is first because it’s the most common and straightforward rule: The first letter of a sentence must always be capitalized. A capital letter shows the reader that a new sentence has begun, the same way a period shows that a sentence has ended.
Yesterday I visited my grandma. We went to the mall, the movies, and then dinner. Afterwards, I dropped her back off at home. It was truly a great time.
Direct quotes within a sentence should also be capitalized:
She was so excited, I remember her saying, “This is the most fun I’ve had in a long time.”
However, if the quote is a phrase or sentence fragment, then it does not need to be capitalized.
I told her “not to worry,” because I’d be coming to visit more often now that we live in the same state.
2. “Capitalizing” Proper Nouns
Proper nouns are always capitalized. These are words that identify individual or unique nouns, unlike common nouns (which identify general or nonspecific nouns). Proper nouns include names of people, places, events, companies, and organizations.
Josiah and I visited Disney World. We took pictures with Mickey Mouse, Pluto, and Donald Duck. On the last day, when we met with Samuel and Jason and went to Animal Kingdom, Josiah accidentally spilled a Pepsi drink all over me.
How about titles like uncle, mom, and grandpa? When they immediately precede a proper name, then the first letters of those words should be capitalized. When they’re used in place of a personal name, they should also start with a capital letter.
I was surprised to see Uncle John at my graduation.
Uh-oh! Wait until Mom sees this.
However, if these titles are preceded by a possessive pronoun, noun, or article, if they follow a personal name, or if they don’t refer to a specific person, then they do not need to be capitalized.
My dad will not be happy that no other fathers helped with the fundraising event.
Because specific days, months, and holidays are proper nouns, they also have to be capitalized.
Every Friday during the month of November, my mom goes shopping for Christmas gifts.
Keep in mind that proper adjectives should be capitalized, too.
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3. “Capitalizing” Titles in Names
An additional, identifying name or title, like Dr. Strange or Mr. Bean, are always capitalized.
Professor Acosta had a guest speaker for today’s lecture.
President Joe Biden was nominated by the Democratic Party.
Mrs. Davis is a favorite among the students.
4. “Capitalizing” Titles and Headlines
Capitalizing titles differs depending on the style guide. However, the most common rule is this: Nouns, pronouns, verbs, adjectives, and adverbs should be capitalized. Prepositions, articles, and conjunctions should be left in lowercase (unless they are the first word).
The Chronicles of Narnia
5. What About “Capitalizing” After Colons?
Should sentences after colons be capitalized as well? This is another rule that depends on style. Most of the time, words after colons are not capitalized. Some exceptions are if (one or more) complete sentences or a proper noun is found right after the colon.
Johanna said there are two reasons she prefers to work from home: One, she can concentrate more. And two, she can be with her pets.
All of these guidelines are important. But the two capitalization rules you must always adhere to is capitalizing the first word in a sentence and proper nouns. Capitalization rules of titles and after colons vary, so always make sure to ask for a style guide if you’re unsure what to do.
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The question of when to capitalise a word can be tricky. As such, sometimes even the most exacting of grammar nerds will need to consult a guide. If you’re writing an essay and you’re unsure about a word, then, check the rules below to see whether a capital is required.
Which Words Should Be Capitalised?
The following situations always require a capital letter:
- The first word in a sentence
- The first-person pronoun ‘I’, along with the contractions ‘I’m’ and ‘I’ll’
- Countries (e.g. ‘France’)
- Settlements and landmarks (e.g. ‘Paris’, ‘the Eiffel Tower’)
- Languages (e.g. ‘French’, ‘Spanish’ or ‘German’)
- Proper nouns related to nationality, (e.g. ‘Frenchman’ or ‘Englishman’)
- Months and days of the week (e.g. ‘We met on a Thursday in June’)
- Special dates and historical periods (e.g. ‘Christmas Day’ or ‘the Iron Age’)
- Important historical events (e.g. ‘World War One’)
- The names of companies, brands and institutions (e.g. ‘Coca Cola’)
- Abbreviated titles (e.g. ‘Mr’, ‘Ms’ or ‘Dr’)
- Honorifics in salutations or before a name (e.g. ‘Dear Sir’ or ‘Dr Quinn’)
- People’s names (e.g. ‘Donald’ or ‘Hillary’)
- Special honours and awards (e.g. ‘Bachelor of Physics’)
Although this list covers the most common examples, there are also other situations where terms should be capitalised.
For example, when discussing religions, words like ‘God’ and ‘Allah’, as well as words pronouns relating to deities (e.g. ‘Him’), are often capitalised. This is known as reverential capitalisation.
Sometimes, job titles are also capitalised, especially when used as part of an official title or alongside a name (e.g. ‘Jane Smith, Head of Recruitment, will be attending the meeting’). This isn’t necessary when the same words are used generically, though (e.g. we would write ‘She hopes to become President of the United States’ because it refers to a specific position, but no capitalisation is needed in ‘Many countries have presidents’).
Title Capitalisation
It’s also conventional to capitalise some words in titles, especially with books and films. When it comes to essay titles, many style guides require you to capitalise just the first word of titles and subtitles, plus proper nouns. This is known as ‘sentence case’. A title like this would run:
A guide to English: Perfecting grammar in an academic paper
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Alternatively, some style guide suggest that all of the main words (i.e. any that aren’t articles, conjunctions or prepositions) should be capitalised. This is known as ‘title case’. A title like this would appear as:
A Guide to English: Perfecting Grammar in an Academic Paper
Make sure to check which format your university prefers.
When NOT to Capitalise
Some situations might seem like a word should be capitalised but, in fact, do not require it. Words which don’t need to be capitalised include:
- The seasons (e.g. ‘spring’ or ‘summer’)
- The word ‘god’ when used in relation to the general idea of gods, rather than the Christian God
- Academic subjects which aren’t part of a degree or other qualification title (e.g. ‘He studied maths and science at school’)
It’s also important to be consistent with capitalisation (i.e. to use the same style of capitalisation throughout each document). And make sure to proofread carefully if you’re not sure about certain terms!
When do you capitalize a word?
The capitalization of a word (meaning its first letter is in the upper case) often depends upon its context and placement within a sentence. While there are some words that are always capitalized no matter where they appear in a sentence—such as “proper” nouns and adjectives, as well as the first-person pronoun I—most words are only capitalized if they appear at the beginning of a sentence.
Determining when to capitalize words in the titles of creative or published works (such as novels, films, essays, plays, paintings, news headlines, etc.) can be very difficult because there is no single, generally accepted rule to follow. However, there are some standard conventions, which we’ll discuss a little further on.
Capitalizing the first word of a sentence
The first word of a sentence is always capitalized. This helps the reader clearly recognize that the sentence has begun, and we make it clear that the sentence has ended by using terminal punctuation marks (e.g., periods, exclamation points, or question marks).
We also capitalize the first letter of a sentence that is directly quoted within another sentence. This is known as direct speech. For example:
- John said, “You’ll never work in this city again!”
- Mary told him, “We should spend some time apart,” which took him by surprise.
- The other day, my daughter asked, “Why do I have to go to school, but you don’t?”
Sometimes, a portion of a larger statement will be quoted as a complete sentence on its own; this is especially common in journalistic writing. To preserve capitalization conventions, we still usually capitalize the first letter of the quoted speech (if it functions as a complete independent sentence), but we surround the capital letter in brackets to make it clear that the change was made by the person using the quotation. For instance:
- The president went on to say, “[W]e must be willing to help those less fortunate than ourselves.”
Note that we do not capitalize the first word in the quotation if it is a word, phrase, or sentence fragment incorporated into the natural flow of the overall sentence; we also do not set it apart with commas:
- My brother said he feels “really bad” about what happened.
- But I don’t want to just “see how things go”!
Trademarks beginning with a lowercase letter
Sometimes, a trademark or brand name will begin with a lowercase letter immediately followed by an uppercase letter, as in iPhone, eBay, eHarmony, etc. If writers decide to begin a sentence with such a trademarked word, they may be confused about whether to capitalize the first letter since it is at the beginning of a sentence, or to leave the first letter in lowercase since it is specific to the brand name. Different style guides have different requirements, but most guides recommend rewording the sentence to avoid the issue altogether:
- «iPhone sales continue to climb.» (not technically wrong, but not ideal)
- “Sales for the iPhone continue to climb.” (correct and recommended)
Proper Nouns
Proper nouns are used to identify a unique person, place, or thing (as opposed to common nouns, which identify generic or nonspecific people or things). A proper noun names someone or something that is one of a kind; this is signified by capitalizing the first letter of the word, no matter where it appears in a sentence.
The most common proper nouns are names of people, places, or events:
- “Go find Jeff and tell him that dinner is ready.”
- “I lived in Cincinnati before I moved to New York.”
- “My parents still talk about how great Woodstock was in 1969.”
Proper nouns are similarly used for items that have a commercial brand name. In this case, the object that’s being referred to is not unique in itself, but the brand it belongs to is. For example:
- “Pass me the Frisbee.”
- “I’ll have a Pepsi, please.”
- “My new MacBook is incredibly fast.”
The names of organizations, companies, agencies, etc., are all proper nouns as well, so the words that make up the name are all capitalized. However, unlike the nouns of people or places, these often contain function words (those that have only grammatical importance, such as articles, conjunctions, and prepositions), which are not capitalized. For example:
- “You’ll have to raise your query with the Department of Foreign Affairs and Trade.”
- “I’ve been offered a teaching position at the University of Pennsylvania.”
- “Bay Area Rapid Transit workers continue their strike for a fifth consecutive day.”
These are often made into acronyms and initialisms, which we’ll discuss a bit later.
Appellations
Appellations are additional words added to a person’s name. These may be used to indicate respect for a person (known as honorifics) or to indicate a person’s profession, royalty, rank, etc. (known as titles). Some appellations are always abbreviated before a person’s name, such as Dr. (short for Doctor), Mr. (short for Mister), and Mrs. (originally a shortened form of Mistress), and some may be used in place of a person’s name altogether (such as Your Honor, Your Highness, or Your Majesty).
Appellations are considered a “part” of the person’s name and are also capitalized in writing as a proper noun. For example:
- “Dr. Spencer insists we perform a few more tests.”
- “I intend to ask Professor Regan about her dissertation on foreign policy.”
- “Prince William is adored by many.”
- “Please see if Mr. Parker and Mrs. Wright will be joining us this evening.”
- “I have no further questions, Your Honor.”
Normal words can also function as appellations after a person’s name to describe his or her appearance, personality, or other personal characteristics; these are formally known as epithets. They are usually accompanied by function words (especially the article the), which are not capitalized. For example:
- Alexander the Great
- Ivan the Terrible
- Charles the Bald
Proper Adjectives
Proper adjectives are formed from proper nouns, and they are also capitalized. They are often made from the names of cities, countries, or regions to describe where something comes from or to identify a trait associated with that place, but they can also be formed from the names of people. For example:
Proper Noun |
Proper Adjective |
Example Sentence |
---|---|---|
Italy |
Italian |
I love Italian food. |
China |
Chinese |
How much does this Chinese robe cost? |
Christ |
Christian |
In Europe, you can visit many ancient Christian churches. |
Shakespeare |
Shakespearean |
He writes in an almost Shakespearean style. |
Sometimes, a word that began as a proper adjective can lose its “proper” significance over time, especially when formed from the name of a fictional character. In these cases, the word is no longer capitalized. Take the following sentence:
- “He was making quixotic mistakes.”
The word quixotic was originally a proper adjective derived from the name “Don Quixote,” a fictional character who was prone to foolish, grandiose behavior. Through time, it has come to mean “foolish” in its own right, losing its association to the character. As such, it is no longer capitalized in modern English.
Another example is the word gargantuan. Once associated with the name of a giant in the 16th-century book Gargantua, it has come to mean “huge” in daily use. Since losing its link with the fictional monster, it is no longer capitalized:
- “The couple built a gargantuan house.”
Other capitalization conventions
While proper nouns, proper adjectives, and the first word in a sentence are always capitalized, there are other conventions for capitalization that have less concrete rules.
Reverential capitalization
Traditionally, words for or relating to the Judeo-Christian God or to Jesus Christ are capitalized, a practice known as reverential capitalization. This is especially common in pronouns, though it can occur with other nouns associated with or used as a metaphor for God. For example:
- “Our Father, who art in heaven, hallowed be thy Name.”
- “We must always model our actions on the Lord’s will, trusting in His plan and in the benevolence of the Almighty.”
However, this practice is one of style rather than grammatical correctness. It is becoming slightly less common in modern writing, especially in relation to pronouns, and many modern publications (even some editions of the Bible) tend not to capitalize pronouns associated with God or Jesus Christ (though nouns such as “the Lamb” or “the Almighty” still tend to be in uppercase).
Finally, note that when the word god is being used to describe or discuss a deity in general (i.e., not the specific God of Christian or Jewish faith), it does not need to be capitalized. Conversely, any name of a specific religious figure must be capitalized the same way as any other proper noun, as in Zeus, Buddha, Allah, Krishna, etc.
Acronyms and Initialisms
Acronyms and initialisms are abbreviations of multiple words using just their initial letters; like the initials of a person’s name, these letters are usually capitalized. Acronyms are distinguished by the fact that they are read aloud as a single word, while initialisms are spoken aloud as individual letters rather than a single word. (However, because the two are so similar in appearance and function, it is very common to simply refer to both as acronyms.)
Acronyms
Because acronyms are said as distinct words, they are usually (but not always) written without periods. In some cases, the acronym has become so common that the letters aren’t even capitalized anymore.
For example:
- “Scientists from NASA have confirmed the spacecraft’s location on Mars.” (acronym of “National Aeronautics and Space Administration”)
- “The officer went AWOL following the attack.” (acronym of “Absent Without Leave”)
- “I need those documents finished A.S.A.P.” (acronym or initialism of “As Soon As Possible”; also often written as ASAP, asap, and a.s.a.p.)
- “His scuba equipment turned out to be faulty.” (Scuba is actually an acronym of “self-contained underwater breathing apparatus,” but it is now only written as a regular word.)
It’s worth noting that in British English, it is becoming increasingly common to write acronyms of well-known organizations with only the first letter capitalized, as in Nafta (North American Free Trade Agreement) or Unicef (United Nations International Children’s Emergency Fund), while initialisms, such as UN or UK, are still written in all capital letters.
Initialisms
Like acronyms, it is most common to write initialisms without periods. However, in American English, it is also common to include periods between the letters of some initialisms. This varies between style guides, and it is generally a matter of personal preference; whether you use periods in initialisms or not, be sure to be consistent.
Here are some examples of common initialisms (some with periods, some without):
- “I grew up in the US, but I’ve lived in London since my early 20s.” (initialism of “United States”)
- “It took a long time, but I’ve finally earned my Ph.D.” (initialism of “Philosophiae Doctor,” Latin for “Doctor of Philosophy”)
- “I need to go to an ATM to get some cash.” (initialism of “Automated Teller Machine”)
- “The witness claimed to have seen a U.F.O. fly over the field last night.” (initialism of “Unidentified Flying Object”)
Notice that the h in Ph.D. remains lowercase. This is because it is part of the same word as P (Philosophiae); it is spoken aloud as an individual letter to help make the initialism distinct. While this mix of uppercase and lowercase letters in an initialism is uncommon, there are other instances in which this occurs. Sometimes, as with Ph.D., the lowercase letters come from the same word as an uppercase letter; other times, the lowercase letter represents a function word (a conjunction, preposition, or article). For example:
- AmE (American English)
- BrE (British English)
- LotR (Lord of the Rings)
- DoD (Department of Defense)
Finally, there are two initialisms that are always in lowercase: i.e. (short for the Latin id est, meaning “that is”) and e.g. (short for the Latin exempli gratia, meaning “for example”). The only instance in which these initialisms might be capitalized is if they are used at the beginning of a sentence, but doing so, while not grammatically incorrect, is generally considered aesthetically unappealing and should be avoided.
Abbreviations in conversational English
In conversational writing, especially with the advent of text messages and online messaging, many phrases have become shortened into informal abbreviations (usually initialisms, but occasionally said aloud as new words). They are usually written without periods and, due to their colloquial nature, they are often left in lowercase. While there are thousands of conversational abbreviations in use today, here are just a few of the most common:
- LOL (short for “Laugh Out Loud,” said as an initialism or sometimes as a word [/lɑl/])
- OMG (short for “Oh My God.” Interestingly, the first recorded use of this initialism was in a letter from Lord John Fisher to Winston Churchill in 1917.)
- BTW (short for “By The Way”)
- BRB (short for “Be Right Back”)
- BFF (short for “Best Friend Forever”)
- IDK (short for “I Don’t Know”)
- FWIW (short for “For What It’s Worth”)
- FYI (short for “For Your Information”)
- IMHO (short for “In My Humble/Honest Opinion”)
- P2P (short for “Peer-To-Peer,” with the word To represented by the number 2, a homophone)
- TLC (short for “Tender Loving Care”)
- TL;DR (short for “Too Long; Didn’t Read”)
- TTYL (short for “Talk To You Later”)
Because these are all very informal, they should only be used in conversational writing.
What to capitalize in a title or headline
There is much less standardization regarding how to capitalize titles or article headlines; different style guides prescribe different rules and recommendations.
That said, it is generally agreed that you should capitalize the first and last word of the title, along with any words of semantic significance—that is, nouns, pronouns, verbs, adjectives, and adverbs—along with proper nouns, proper adjectives, acronyms, and initialisms. “Function words,” those that primarily add grammatical meaning rather than anything substantial (prepositions, articles, and conjunctions), are generally left in lowercase. This convention is sometimes known as title case, and some style guides recommend following it without exception, even for longer function words like between or upon.
For example:
- “New Regulations for Schools Scoring below National Averages”
- “An Analysis of the Differences between Formatting Styles”
- “President to Consider Options after Results of FBI Investigation”
- “Outrage over Prime Minister’s Response to Corruption Charges”
Some words can pose problems because they can in some instances be prepositions and in other instances be adverbs. For example, in the phrasal verb take off, off is functioning adverbially to complete the meaning of the verb, so it would be capitalized in a title:
- “Home Businesses Taking Off in Internet Age”
- “Home Businesses Taking off in Internet Age”
Another group of words that often gives writers problems is the various forms of the verb to be, which conjugates as is, am, are, was, were, been, and being. Because many of its forms are only two or three letters, writers are often inclined not to capitalize them; however, because to be is a verb, we should always capitalize it when using title case:
- “Determining Who Is Responsible for the Outcome” (correct)
- “Determining Who is Responsible for the Outcome” (incorrect)
Capitalizing words longer than three letters
Function words are usually not capitalized in title case, but longer function words (such as the conjunctions because or should or the prepositions between or above) are often considered to add more meaning than short ones like or or and. Because of this, it is a common convention is to capitalize function words that have more than three letters in addition to “major” words like nouns and verbs. Here’s how titles following this convention look:
- “New Regulations for Schools Scoring Below National Averages”
- “An Analysis of the Differences Between Formatting Styles”
- “President to Consider Options After Results of FBI Investigation”
- “Outrage Over Prime Minister’s Response to Corruption Charges”
Some style guides specify that only function words that are longer than four letters should be capitalized. Following this convention, the first three examples would remain the same, but the word over in the fourth example would remain lowercase. However, the “longer than three letters” rule is much more common.
Capitalizing hyphenated compounds
When a compound word features a hyphen, there are multiple ways to capitalize it in a title. Because compound words always serve as nouns or adjectives (or, rarely, verbs), we always capitalize the first part of the compound. What is less straightforward is whether to capitalize the word that comes after the hyphen. Some style guides recommend capitalizing both parts (so long as the second part is a “major” word), while others recommend only capitalizing the first part. For example:
- “How to Regulate Self-Driving Cars in the Near Future”
- “Eighteenth-century Warship Discovered off the Coast of Norway”
Certain style guides are very specific about how to capitalize hyphenated compounds, so if your school or employer uses a particular guide for its in-house style, be sure to follow its requirements. Otherwise, it is simply a matter of personal preference whether hyphenated compounds should be capitalized in full or in part; as always, just be consistent.
Compounds with articles, conjunctions, and prepositions
Some multiple-word compounds are formed with function words (typically the article the, the conjunction and, or the preposition in) between two other major words. While capitalizing the major words in the compound is optional and up to the writer’s personal preference, the function words will always be in lowercase:
- “Are Brick-and-Mortar Stores Becoming Obsolete?”
- “Prices of Over-the-counter Medications Set to Rise”
- “Business Tycoon Appoints Daughter-In-Law as New CEO”
The only exception to this rule is when writers choose to capitalize every word in the title.
Start case
To eliminate the possible confusion caused by short “substance” words (e.g., forms of to be), long function words (e.g., because or beneath), and hyphenated compounds, some publications choose to simply capitalize every word in a title, regardless of the “types” of words it may contain. This is sometimes known as “start case” or “initial case.” For instance:
- “New Regulations For Schools Scoring Below National Averages”
- “An Analysis Of The Differences Between Formatting Styles”
- “President To Consider Options After Results Of FBI Investigation”
- “Outrage Over Prime Minister’s Response To Corruption Charges”
This is especially common in journalism and online publications, but it is usually not recommended for academic or professional writing.
Sentence case
“Sentence case” refers to titles in which only the first word has a capital letter, the same way a sentence is capitalized. (Again, proper nouns, proper adjectives, acronyms, and initialisms remain capitalized.) As with start case, sentence case is useful because it eliminates any possible confusion over which words should be capitalized. Titles following this convention look like this:
- “New regulations for schools scoring below national averages”
- “An analysis of the differences between formatting styles”
- “President to consider options after results of FBI investigation”
- “Outrage over Prime Minister’s response to corruption charges”
Sentence case is not typically recommended by academic or professional style guides, though this is not always true. Some magazine and news publications use the style for their headlines as well, as do many websites.
Capitalizing subtitles
When a piece of work has both a main title and a secondary subtitle (separated by a colon), we apply the same capitalization rules to both—that is, the same types of words will be in uppercase or lowercase depending on which style is being used. We also capitalize the first word after the colon, treating the subtitle as its own. For example:
- The Secret Agent: A Simple Tale
- Terminator 2: Judgment Day
- Angela’s Ashes: A Memoir
- Vanity Fair: A Novel without a Hero (sometimes written as Vanity Fair: A Novel Without a Hero due to the preference of capitalizing words longer than three letters)
This convention is also true in academic essays, whose subtitles tend to be longer and more detailed, giving the reader a brief explanation of what the essay is about:
- From the Television to the Supermarket: How the Rise of Modern Advertising Shaped Consumerism in America
- True Crimes: A Look at Criminal Cases That Inspired Five Classic Films
Note that if the main title is written in sentence case, then we only capitalize the first word of the subtitle (after the colon):
- In their shoes: Women of the 1940s who shaped public policy
However, this style is generally only used when a title appears in a list of references in an essay’s bibliography (individual style guides will have specific requirements for these works cited pages).
Alternate titles
Sometimes a subtitle acts as an alternate title; in this case, the two are often separated with a semicolon or a comma, followed by a lowercase or (though the specific style is left to the writer’s or publisher’s discretion). However, the alternate title is still capitalized the same way as the main title, with the first word after or being capitalized even if it is a short function word. For example:
- Frankenstein; or, The Modern Prometheus
- Moby-Dick; or, The Whale
- Twelfth Night, or What You Will
- Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb
Capitalizing headings
Headings are titles that identify or introduce a specific section within a larger academic essay or business document. In general, headings will be capitalized in the same manner as the document’s title, usually having the first and last word capitalized as well as any nouns, adjectives, adverbs, and verbs (and, depending on the style guide being followed, any prepositions or conjunctions longer than three letters).
Sometimes a written work will have multiple subheadings of sections that belong within a larger heading. It is common for subheadings to be written in sentence case, but most style guide have specific requirements for when this can be done (for instance, if the subheading is the third or more in a series of headings), if at all.
Deciding how to capitalize a title
Ultimately, unless your school or employer follows one specific style guide, it is a matter of preference to decide how the title is formatted. No matter which style you adopt, the most important thing is to be consistent throughout your body of writing.
At first glance, capitalization seems like an easy grammatical area to master. Just capitalize the first word of a sentence and any names, right? If only it were that simple.
The rules of capitalization have changed significantly since the seventeenth century. Back then, it was fashionable to use uppercase for any word deemed significant, including common nouns. We’ve since become more selective about what gets an uppercase letter and what misses out, which has led to some discrepancies between style guides (more on that later).
So before you hit that caps lock key, read this guide to determine whether you need a capital letter or not.
When to use a capital letter
At the start of a sentence
This one’s easy. If you’re writing a new sentence, the first word should have a capital letter. It doesn’t matter if the word is a noun, verb, or adjective—capitalize it.
This sentence starts with a capital letter. As does this one.
For the pronoun «I»
No matter where in a sentence it’s located, «I» should always be uppercase. This rule doesn’t apply to other personal pronouns like «we» or «you» (unless they’re the first word in a sentence, of course).
Whenever it rains, I prepare a big batch of pumpkin soup.
Harry and I took the dogs to the beach.
For proper nouns
A proper noun is the name of a specific person, place, organization, or thing. It should always be capitalized, no matter where it is placed in a sentence.
Have you visited the Nike shop on Pitt Street?
My sister, Sarah, will be attending Brown University next year.
The same rule applies to any adjectives that are derived from a proper noun.
I ate two English muffins for breakfast.
However, you don’t need to capitalize generic terms. For example, «lake» by itself would be lowercase, but «Lake Louise» must be capitalized. You may also come across certain brand names, like eBay and iTunes, which require a different type of capitalization.
For days, months, and holidays
If you’re referring to a day of the week, month, special event or holiday, remember to capitalize it. Just note that this rule doesn’t apply to seasons.
Erik spends every Thanksgiving at his grandmother’s house.
Next Tuesday will be the first day of spring.
When you might need a capital letter
When quoting a full sentence
Now things are getting a little trickier. If you are directly quoting a full sentence, you must capitalize the first word. But if you’re only quoting part of a sentence, don’t capitalize it. Here’s an example:
Agatha Christie once said, «The best time for planning a book is while you’re doing the dishes.»
Niamh wished her «rowdy» housemates would move out soon.
For titles
This is another case of «it depends». Generally, if a job title comes directly before a person’s name, it should be capitalized. You may also capitalize formal titles when used directly.
Did you watch President Biden’s inauguration ceremony?
I look forward to reading Professor Chan’s new book.
Do you have any updates, Doctor?
However, job titles that come after (or instead of) a name are usually lowercase. This rule extends to occupations.
I spoke to Mrs Hernandez, vice president of marketing, earlier today.
The film’s director, John Krasinski, accepted the award.
After colons and semi-colons
You generally don’t need to capitalize the first word after a colon or semi-colon unless it’s a proper noun. However, some American style guides do require capitalization if a complete sentence follows the colon.
Most shortbread recipes contain the following ingredients: flour, butter, and sugar.
When you don’t need a capital letter
Words belonging to these categories are usually lowercase (apart from any proper nouns, of course).
- animals
- foods
- elements
- plants
- medical conditions
- compass directions
A note about style guides
Many organizations have a style guide. It’s a document that outlines how to communicate in a way that is consistent and on-brand. Editorial style guides often cover aspects like brand voice and tone, vocabulary, and grammar conventions. If you’d like to see an example, check out Mailchimp’s.
Good style guides will clearly set out their capitalization rules, particularly whether to use title case or sentence case when writing headings. Let’s look at the difference between the two.
Title case
As the more formal option, title case is commonly used by newspapers and journal articles. According to the APA Style Guide, every «major word» should be capitalized when using title case, and every «minor word» should be lowercase.
- Major words: nouns, verbs, adverbs, adjectives, and any word that contains four or more letters.
- Minor words: articles, conjunctions, and prepositions.
Sentence case
Sentence case is seen as more readable and approachable than title case. This makes it a popular choice for blog titles and email subject lines (and Outwrite’s website copy!). It’s also easier to use than title case, as only the first word and any proper nouns are capitalized. Here are a few examples:
Title case: A Quick Guide to Capitalization
Sentence case: A quick guide to capitalization
Title case: 7 Things to Know Before Joining Clubhouse
Sentence case: 7 things to know before joining Clubhouse
Regardless of which option you choose, be consistent!
The easy way to get it right
If you’re feeling overwhelmed by all those rules, don’t worry—Outwrite’s got your back. It’ll detect any instances when you’ve forgotten to use a capital letter or used one incorrectly. Just be sure to consult your style guide for any specific rules.
Capital letters are not really an aspect of punctuation, but it is convenient to deal
with them here. The rules for using them are mostly very simple.
(a) The first word of a sentence, or of a fragment, begins with a capital letter:
- The bumbling wizard Rincewind is Pratchett’s most popular character.
- Will anyone now alive live to see a colony on the moon? Probably not.
- Distressingly few pupils can locate Iraq or Japan on a map of the
world.
(b) The names of the days of the week, and of the months of the year, are
written with a capital letter:
- Next Sunday France will hold a general election.
- Mozart was born on 27 January, 1756.
- Football practice takes place on Wednesdays and Fridays.
However, the names of seasons are not written with a capital:
- Like cricket, baseball is played in the summer.
Do not write *»… in the Summer«.
(c) The names of languages are always written with a capital letter. Be careful
about this; it’s a very common mistake.
- Juliet speaks English, French, Italian and Portuguese.
- I need to work on my Spanish irregular verbs.
- Among the major languages of India are Hindi, Gujarati and Tamil.
- These days, few students study Latin and Greek.
Note, however, that names of disciplines and school subjects are not
capitalized unless they happen to be the names of languages:
- I’m doing A-levels in history, geography and English.
- Newton made important contributions to physics and mathematics.
- She is studying French literature.
(d) Words that express a connection with a particular place must be capitalized
when they have their literal meanings. So, for example, French must be
capitalized when it means `having to do with France’:
- The result of the French election is still in doubt.
- The American and Russian negotiators are close to agreement.
- There are no mountains in the Dutch landscape.
- She has a dry Mancunian sense of humour.
(The word Mancunian means `from Manchester’.)
However, it is not necessary to capitalize these words when they occur
as parts of fixed phrases and don’t express any direct connection with the
relevant places:
- Please buy some danish pastries.
- In warm weather, we keep our french windows open.
- I prefer russian dressing on my salad.
Why the difference? Well, a danish pastry is merely a particular sort of pastry;
it doesn’t have to come from Denmark. Likewise, french windows are merely a
particular kind of window, and russian dressing is just a particular variety of
salad dressing. Even in these cases, you can capitalize these words if you want
to, as long as you are consistent about it. But notice how convenient it can be to make the difference:
- In warm weather, we keep our french windows open.
- After nightfall, French windows are always shuttered.
In the first example, french windows just refers to a kind of window; in
the
second, French windows refers specifically to windows in France.
(e) In the same vein, words that identify nationalities or ethnic groups must be
capitalized:
- The Basques and the Catalans spent decades struggling for autonomy.
- The Serbs and the Croats have become bitter enemies.
- Norway’s most popular singer is a Sami from Lapland.
(An aside: some ethnic labels which were formerly widely used are now
regarded by many people as offensive and have been replaced by other labels.
Thus, careful writers use Black, not Negro; native American, not Indian or red
Indian; native Australian, not Aborigine. You are advised to
follow suit.)
(f) Formerly, the words black and white, when applied to human beings, were
never capitalized. Nowadays, however, many people prefer to capitalize them
because they regard these words as ethnic labels comparable to Chinese or
Indian:
- The Rodney King case infuriated many Black Americans.
You may capitalize these words or not, as you prefer, but be consistent.
(g) Proper names are always capitalized. A proper name is a name or a title that
refers to an individual person, an individual place, an individual institution or an
individual event. Here are some examples:
- The study of language was revolutionized by Noam Chomsky.
- The Golden Gate Bridge towers above San Francisco Bay.
- There will be a debate between Professor Lacey and Doctor Davis.
- The Queen will address the House of Commons today.
- Many people mistakenly believe that Mexico is in South America.
- My friend Julie is training for the Winter Olympics.
- Next week President Clinton will be meeting Chancellor Kohl.
Observe the difference between the next two examples:
- We have asked for a meeting with the President.
- I would like to be the president of a big company.
In the first, the title the President is capitalized because it is a title referring to a
specific person; in the second, there is no capital, because the word president
does not refer to anyone in particular. (Compare We have asked for a meeting
with President Wilson and *I would like to be President Wilson of a big
company.) The same difference is made with some other words: we write the
Government and Parliament when we are referring to a particular government or
a particular parliament, but we write government and parliament when we are
using the words generically. And note also the following example:
- The patron saint of carpenters is Saint Joseph.
Here Saint Joseph is a name, but patron saint is not and gets no capital.
There is a slight problem with the names of hazily defined geographical
regions. We usually write the Middle East and Southeast Asia, because these
regions are now regarded as having a distinctive identity, but we write central
Europe and southeast London, because these regions are not thought of as
having the same kind of identity. Note, too, the difference between South
Africa (the name of a particular country) and southern Africa (a vaguely defined
region). All I can suggest here is that you read a good newspaper and keep
your eyes open.
Observe that certain surnames of foreign origin contain little words that
are often not capitalized, such as de, du, da, von and van. Thus we write
Leonardo da Vinci, Ludwig van Beethoven, General von Moltke
and Simone de
Beauvoir. On the other hand, we write Daphne Du Maurier and Dick Van
Dyke, because those are the forms preferred by the owners of the names.
When in doubt, check the spelling in a good reference book.
A few people eccentrically prefer to write their names with no capital
letters at all, such as the poet e. e. cummings and the singer k. d. lang. These
strange usages should be respected.
(h) The names of distinctive historical periods are capitalized:
- London was a prosperous city during the Middle Ages.
- Britain was the first country to profit from the Industrial Revolution.
- The Greeks were already in Greece during the Bronze Age.
(i) The names of festivals and holy days are capitalized:
- We have long breaks at Christmas and Easter.
- During Ramadan, one may not eat before sundown.
- The feast of Purim is an occasion for merrymaking.
- Our church observes the Sabbath very strictly.
- The children greatly enjoy Hallowe’en.
(j) Many religious terms are capitalized, including the names of religions and of
their followers, the names or titles of divine beings, the titles of certain
important figures, the names of important events and the names of sacred
books:
- An atheist is a person who does not believe in God.
- The principal religions of Japan are Shinto and Buddhism.
- The Indian cricket team includes Hindus, Muslims, Sikhs and Parsees.
- The Lord is my shepherd.
- The Prophet was born in Mecca.
- The Last Supper took place on the night before the Crucifixion.
- The Old Testament begins with Genesis.
Note, however, that the word god is not capitalized when it refers to a pagan
deity:
- Poseidon was the Greek god of the sea.
(k) In the title or name of a book, a play, a poem, a film, a magazine, a
newspaper or a piece of music, a capital letter is used for the first word and for
every significant word (that is, a little word like the, of, and or in is not
capitalized unless it is the first word):
- I was terrified by The Silence of the Lambs.
- The Round Tower was written by Catherine Cookson.
- Bach’s most famous organ piece is the Toccata and Fugue in D
Minor. - I don’t usually like Cher, but I do enjoy The Shoop Shoop Song.
Important note: The policy just described is the one most widely used in
the
English-speaking world. There is, however, a second policy, preferred by
many people. In this second policy, we capitalize only the first word of a title
and any words which intrinsically require capitals for independent reasons.
Using the second policy, my examples would look like this:
- I was terrified by The silence of the lambs.
- The round tower was written by Catherine Cookson.
- Bach’s most famous organ piece is the Toccata and fugue in D
minor. - I don’t usually like Cher, but I do enjoy The shoop shoop song.
You may use whichever policy you prefer, so long as you are consistent about
it. You may find, however, that your tutor or your editor insists upon one or
the other. The second policy is particularly common (though not universal) in
academic circles, and is usual among librarians; elsewhere, the first policy is
almost always preferred.
(l) The first word of a direct quotation, repeating someone else’s exact words,
is always capitalized if the quotation is a complete sentence:
- Thomas Edison famously observed «Genius is one per cent inspiration
and ninety-nine per cent perspiration.»
But there is no capital letter if the quotation is not a complete sentence:
- The Minister described the latest unemployment figures as
«disappointing».
(m) The brand names of manufacturers and their products are capitalized:
- Maxine has bought a second-hand Ford Escort.
- Almost everybody owns a Sony Walkman.
Note: There is a problem with brand names which have become so successful
that they are used in ordinary speech as generic labels for classes of products.
The manufacturers of Kleenex and Sellotape are exasperated to find people
using kleenex and sellotape as ordinary words for facial tissues or sticky tape of
any kind, and some such manufacturers may actually take legal action against
this practice. If you are writing for publication, you need to be careful about
this, and it is best to capitalize such words if you use them. However, when
brand names are converted into verbs, no capital letter is used: we write She
was hoovering the carpet and I need to xerox this report, even though the
manufacturers of Hoover vacuum cleaners and Xerox photocopiers don
‘t much
like this practice, either.
(n) Roman numerals are usually capitalized:
- It is no easy task to multiply LIX by XXIV using Roman numerals.
- King Alfonso XIII handed over power to General Primo de Rivera.
The only common exception is that small Roman numerals are used to number
the pages of the front matter in books; look at almost any book.
(o) The pronoun I is always capitalized:
- She thought I’d borrowed her keys, but I hadn’t.
It is possible to write an entire word or phrase in capital letters in order
to emphasize it:
- There is ABSOLUTELY NO EVIDENCE to support this conjecture.
On the whole, though, it is preferable to express emphasis, not with capital
letters, but with italics.
It is not necessary to capitalize a word merely because there is only one
thing it can possibly refer to:
- The equator runs through the middle of Brazil.
- Admiral Peary was the first person to fly over the north pole.
- The universe is thought to be about 15 billion years old.
Here the words equator, north pole and universe need no capitals, because they
aren’t strictly proper names. Some people choose to capitalize them anyway;
this is not wrong, but it’s not recommended.
Capital letters are also used in writing certain
abbreviations and related
types of words, including the abbreviated names of organizations and
companies, and in letter
writing and in the headings of essays.
There is one other rather rare use of capital letters which is worth
explaining if only to prevent you from doing it by mistake when you don’t
mean to. This to poke fun at something. Here is an example:
- The French Revolution was a Good Thing at first, but Napoleon’s rise
to power was a Bad Thing.
Here the writer is making fun of the common tendency to see historical events
in simple-minded terms as either good or bad. Another example:
- Many people claim that rock music is Serious Art, deserving of Serious
Critical Attention.
The writer is clearly being sarcastic: all those unusual capital letters demonstrate
that he considers rock music to be worthless trash.
This stylistic device is only appropriate in writing which is intended to
be humorous, or at least light-hearted; it is quite out of place in formal writing.
The use of unnecessary capital letters when you’re trying to be serious
can quickly make your prose look idiotic, rather like those content-free books
that fill the shelves of the «New Age» section in bookshops:
- Your Eidetic Soul is linked by its Crystal Cord to the Seventh Circle of
the Astral Plane, from where the Immanent Essence is
transmitted to your Eidetic Aura,…
You get the idea. Don’t use a capital letter unless you’re sure you know why
it’s there.
Summary of Capital Letters:
Capitalize
- the first word of a sentence or fragment
- the name of a day or a month
- the name of a language
- a word expressing a connection with a place
- the name of a nationality or an ethnic group
- a proper name
- the name of a historical period
- the name of a holiday
- a significant religious term
- the first word, and each significant word, of a title
- the first word of a direct quotation which is a
sentence - a brand name
- a Roman numeral
- the pronoun I
Copyright © Larry Trask, 1997
Maintained by the Department of Informatics, University of Sussex