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Capitalization Rules (With Examples)

Capitalization rules

Capitalize from this guide on the rules of capitalization in English. When to capitalize and when not to capitalize is a common question; let’s take a look at rules and reasons, below.



Rules of capitalization

1. Capitalize the first word of a sentence

A basic rule of capitalization is to start each sentence with a capital letter. This marks the start of the sentence, and the beginning of a new thought or idea.


  • Capitalization rules play a crucial role in improving the readability of your writing. They provide a clear structure for your thoughts and help convey your message effectively.



2. Proper Nouns: nouns, people, places

Proper nouns name specific people, places, ideas and companies always begin with a capital letter:


  • I recently visited New York City (name of city) and explored the Metropolitan Museum of Art (specific place). The experience was unforgettable.



3. Titles and honourifics

Titles and honorifics, such as Mr., Mrs., Dr., and Professor, should be capitalized when used with a person’s name:

  • Dr. Smith conducted an insightful lecture on the impact of climate change.
  • I appreciate Professor Johnson’s dedication to education.



4. Days of the week and months

Days of the week and months are proper nouns and use upper case letters:

  • The meeting is on Monday, and the project deadline is in December.



5. Historical events and periods

When referring to specific historical events, eras, or movements, capitalize the relevant terms:

  • The Renaissance was a period of great cultural and artistic innovation in Europe.
  • The Industrial Revolution transformed societies in the 18th and 19th centuries.



6. Capitalize nationalities and languages:

Nationalities and languages are proper nouns and should be capitalized:

  • She speaks Spanish fluently, and her family has Italian roots.



7. Capitalize the Pronoun I:

The pronoun “I” is always capitalized, regardless of its position in a sentence:

  • I am looking forward to the weekend getaway with my friends.



7. Capitalize titles of works

Capitalize the titles of books, movies, songs, and other creative works:

  • I just finished reading To Kill a Mockingbird, and I highly recommend it.

In titles and headings, capitalize the important words, including nouns, pronouns, verbs, adverbs, and adjectives); e.g., The Art of Cooking: A Culinary Journey through Exquisite Flavors.


Commonly misused wordsUK English vs. US English
former vs. latterburned or burnt?
bear with vs. bare withcolor or colour?
breathe or breathfavorite vs. favourite
compliment vs. complementsmelled or smelt?
effect vs. affectgray or grey?
elude or alludefavor vs. favour
it’s or itsanalyze or analyse?

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