Text Case Converter
UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case. Pick your poison.
What this does
Paste text, pick a case, get converted text. Seven options cover everything from fixing accidental caps lock to generating variable names for code.
Common use cases
Fixing text you accidentally typed in caps lock. Select lower and move on with your life.
Formatting headings. Title Case capitalizes the right words for blog posts, articles, and presentation slides. Sentence case handles the rest.
Variable naming. Developers bounce between camelCase, snake_case, and kebab-case constantly. Rewriting by hand is tedious and error-prone, especially with long multi-word names.
Standardizing lists. You've got a spreadsheet column where half the entries are uppercase and half aren't. Paste them in, pick a case, paste them back.
Things to know
Title Case follows the general convention of capitalizing major words and lowercasing small ones. Style guides disagree on the exact rules. This tool uses sensible defaults that work for most headings and titles.
camelCase, snake_case, and kebab-case work best on phrases and simple sentences. They strip punctuation and collapse spaces because that's what variable naming requires. Don't run your novel through kebab-case and expect it to come back intact.
Privacy
All conversions happen in your browser. Your text stays on your machine.
Questions
How do I convert text to all uppercase or all lowercase?
Paste it in, pick UPPER or lower, copy the result. Handy for fixing a caps-lock accident or standardizing a column where half the entries are shouting and half aren't.
What's the difference between camelCase, snake_case, and kebab-case?
Same words, different glue. camelCase bumps each new word up (myVariableName), snake_case joins them with underscores (my_variable_name), kebab-case uses hyphens (my-variable-name). Which one you want usually depends on the language or style guide you're stuck with.
What's the difference between Title Case and Sentence case?
Title Case capitalizes the major words, the way a headline does. Sentence case capitalizes the first word and leaves the rest alone, the way this sentence does. Title for headings, sentence for everything that reads like prose.
Will it mangle my punctuation?
UPPER, lower, Title, and Sentence keep your text intact. camelCase, snake_case, and kebab-case strip punctuation and collapse spaces on purpose, because that's what variable names need. Don't run a paragraph through kebab-case and expect it back in one piece.