Case Converter
Change text to UPPERCASE, lowercase, Sentence case, Capitalized Case, aLtErNaTiNg, camelCase, snake_case, kebab-case and more, with every version shown at once.
Fix text typed with Caps Lock on, turn a heading into Sentence case, or rename a list of fields to camelCase or snake_case for code. Pick one case for the main result; the table underneath shows the same text in all thirteen cases so you can compare and copy any of them.
How to use this tool
- Paste or type your text.
- Choose the case you want; the result updates as you type.
- For Turkish, Azerbaijani, Lithuanian, Greek or Dutch text, pick the language so its letters change correctly.
- Press Copy, or copy a line from the table.
Formula
Sentence case = lowercase everything, then capitalize the first letter after . ! ? or a line break · camelCase = words joined, each after the first capitalized
Letters change with the browser’s Unicode case rules for the chosen language, so ß becomes SS in capitals and Turkish i becomes İ. Words in all capitals (NASA, BBC) are kept unless most of the text is in capitals. The programming cases treat each line as one name and split words at spaces, punctuation and lower-to-upper changes, so XMLHttpRequest becomes xml_http_request.
Example
The sample “the quick brown fox jumps over the lazy dog. then it ran past the BBC studio!” becomes “The quick brown fox jumps over the lazy dog. Then it ran past the BBC studio!” in Sentence case. “user first name” becomes userFirstName in camelCase, user_first_name in snake_case and USER_FIRST_NAME in CONSTANT_CASE.
Frequently asked questions
Why did a name stay lowercase in Sentence case?
A converter cannot tell that “london” or “monday” is a proper noun, so Sentence case only capitalizes the start of each sentence and the word I. Fix names by hand, or use Capitalized Case and lower the small words yourself.
What is the difference between Capitalized Case and Title Case?
Capitalized Case capitalizes every word. Title Case here leaves short words such as of, the, and and in lowercase unless they come first or last. For a specific style guide (APA, Chicago, AP, MLA), use the title case converter.
Why does the language setting matter?
A few languages have their own case pairs. In Turkish and Azerbaijani, i pairs with İ and ı with I; Greek capitals drop accents; Dutch capitalizes IJ together at the start of a word. Other languages use the default rules.
Is my text sent anywhere?
No. The conversion runs in your browser as you type.
Last updated:
Page address with these inputs: https://kakao.mobile/tools/case-converter/
Cite or embed this tool
kakaoCalc. (2026, November 8). Case Converter. https://kakao.mobile/tools/case-converter/
“Case Converter.” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/case-converter/.
Paste this code into your page. The widget runs in your visitors' browsers, shows no ads and keeps a link back to this page. Embedding terms