Case Converter

A case converter changes the capital letters in your text. Paste or type your text, press a button, and every letter is changed to upper case, lower case, sentence case, title case or another style. It is handy when you typed a paragraph with Caps Lock on, or when a heading needs to follow a style guide.

Sentence case capitalizes only the first letter of each sentence, and the word "I". Title case capitalizes the main words of a heading and keeps short words such as "a", "the", "and" and "of" in lower case, except for the first and last word. Blog posts and web page headings often use title case; body text and many modern interfaces use sentence case.

Both capitalize the first and last word, and the first word after a colon. AP / APA keeps articles, conjunctions and short prepositions (three letters or fewer) in lower case, so "Through" and "With" are capitalized. Chicago / MLA keeps every preposition in lower case, whatever its length, so "through" and "with" stay small. If you have no house style, use AP / APA. These are the common rules for headings, not a full style-guide check, so read important titles once yourself.

Words that already mix capitals inside them, such as NASA, iPhone or eBay, are left as you typed them. If your whole text is in capitals, it is lowercased first so the title case can be applied.

They are naming styles used in programming and in URLs. camelCase joins words with no spaces and capitalizes each word after the first (myVariableName). PascalCase capitalizes every word (MyVariableName). snake_case joins lower-case words with underscores (my_variable_name), kebab-case joins them with hyphens (my-variable-name), and CONSTANT_CASE uses capitals and underscores (MY_VARIABLE_NAME). Each line of your text is converted on its own.

No. Sentence case lowercases everything except the first letter of each sentence and the word "I", so names of people, places and companies need a capital added by hand. It also cannot tell an abbreviation such as "Dr." from the end of a sentence, so check the result.

No. The conversion runs in your browser. Your text is not uploaded, stored or seen by us. The tool is free and needs no sign-up.