Online case converter
Need to make text all caps, all lowercase, or turn a variable name from snake_case into camelCase? This case converter offers 9 common formats in one click — great for naming in code and tidying up titles and copy.
Supported formats
- UPPERCASE / lowercase: all caps, all lowercase.
- Title Case: first letter of each word capitalized.
- Sentence case: only the first letter capitalized.
- camelCase / PascalCase: camel-style naming.
- snake_case / kebab-case / CONSTANT_CASE: underscore, hyphen, constant naming.
How to use
- Paste text into the input box.
- Click the format you want.
- The result appears instantly and can be copied.
Does Title Case capitalize every word?
Formatting an English headline as Title Case, turning a shouty ALL-CAPS line back into something readable, or flipping a variable name between camelCase and snake_case — doing that by hand is slow and easy to botch, so a one-click converter saves the fiddling. One common misconception worth clearing up: Title Case does not simply capitalize the first letter of every word. The English convention keeps short function words — articles, prepositions, and conjunctions like a, an, the, of, and, in — in lowercase, capitalizing only the first and last words plus the meaningful ones. That's why 'The Lord of the Rings' lowercases of and the. If a tool uppercases every word, that's really Start Case — so give those little words a second look before dropping the result into a formal title.
Two limits worth knowing before you trust it
Test it with an acronym and a brand name first. HTTP response code comes back as camelCase httpResponseCode and snake_case http_response_code — the acronym is flattened, which is what most style guides want but is still a decision rather than a neutral transformation. And iPhone 15 Pro Max in snake_case is i_phone_15_pro_max: it splits at the case transition inside iPhone and leaves a stray leading i. Title case cannot rescue proper nouns either — the lord of the rings becomes The Lord Of The Rings, capitalising even of and the. Run it, then read it.