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Case Converter
LiveFix the caps-lock paragraph or format a name for code. Eight case styles, one click apart, converted in the page rather than on a server.
Convert to
Converts in place. Nothing leaves your browser.
What it does
- Eight styles: UPPER, lower, Title, Sentence, camel, snake, kebab, CONSTANT
- One-click copy
- Converts a whole document without uploading it
Your files
It never leaves your device.
This one runs entirely in your browser. Nothing you type or drop here is sent to us, so there is nothing on our server to keep, and nothing to delete. It works offline once the page has loaded.
Frequently asked questions
How do I change text from uppercase to lowercase?
Paste the text into the box above and press lowercase. The converted text replaces what was in the box, and Copy puts it on your clipboard. There is no signup, no upload and nothing to install: the conversion happens inside the page you are already reading.
Which case styles can I convert to?
Eight, each on its own button: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and CONSTANT_CASE. The last four are the identifier styles used in code, and they turn one small step into oneSmallStep, one_small_step, one-small-step and ONE_SMALL_STEP respectively. There is no PascalCase button today.
Can I undo a conversion?
No, and it is worth knowing before you press anything. The tool converts in place: the result replaces the text in the box, and pressing a second style then converts that result rather than what you originally pasted. Press Copy before you start if you might want the original back, since the only other control is clear, which empties the box.
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word. Sentence case capitalizes the first letter of each sentence only, where a sentence ends at a full stop, question mark, exclamation mark or ellipsis followed by a space. Both lowercase the whole text first, which is the honest limit of a one-click converter: it cannot tell a proper noun from an ordinary word, so NASA comes back as Nasa, and a name in the middle of a sentence loses its capital in Sentence case.
Does it handle apostrophes, accents and other alphabets?
Yes. Contractions and possessives keep their shape, so isn't becomes Isn't in Title Case and not Isn'T. Accented letters are preserved rather than stripped, and Title Case and Sentence case capitalize Cyrillic, Greek and other alphabets rather than passing them through untouched. The four identifier styles keep letters from any alphabet and drop punctuation, so привет мир becomes приветМир in camelCase.
Is my text sent to your server?
No. Every style runs in JavaScript this page has already downloaded, so what you paste never leaves your device and there is nothing on our server to keep or delete. Turn off your network after the page has loaded and the buttons still work. The page does tell us once per visit that the case converter was used, which is how the counter on this page is kept: that request carries no body, so none of your text goes with it.