Free Online Case Converter
Paste your text and switch its case with one click — for prose or code.
Convert to
Tip: Ctrl + Enter applies Title Case · Ctrl + K clears
How it works
- Paste or type your text into the box.
- Click the case you want — UPPERCASE, Title Case, camelCase and more.
- Your text is converted in place; click Undo if you change your mind.
- Copy the result or download it as a .txt file.
Frequently asked questions
What is the difference between Title Case and Sentence case?
Title Case capitalises the main words of every heading ("The Lord of the Rings"), leaving short words like "of" and "the" lowercase. Sentence case only capitalises the first word of each sentence and proper nouns, like normal writing.
Which case should I use for code?
JavaScript variables usually use camelCase, classes use PascalCase, Python and database columns use snake_case, URLs and CSS classes use kebab-case, and constants use CONSTANT_CASE.
Why are some names lowercase after Sentence case?
Sentence case lowercases everything first and cannot know which words are names. Re-capitalise proper nouns like "London" or "iPhone" after converting.
Does it work with accents and other languages?
Yes. Letters such as é, ü and ß are converted correctly, and non-Latin scripts that have case (like Greek and Cyrillic) are supported too.
Change text case in one click
Accidentally typed a paragraph with Caps Lock on? Need a headline in Title Case, or a variable name in snake_case? This case converter rewrites your text instantly, so you never have to retype it.
Case styles explained
- UPPERCASE — every letter capitalised; good for short labels and acronyms.
- lowercase — every letter small; useful for normalising emails and tags.
- Title Case — major words capitalised, with short words like "and", "of" and "the" kept lowercase in the middle of a title.
- Sentence case — only the first letter of each sentence capitalised, like normal writing.
- aLtErNaTiNg and iNVERSE — playful styles for memes and social posts.
Programming case conventions
Developers name things using consistent styles. The converter splits your words — even from existing identifiers like getUserID or max-retry-count — and rebuilds them as camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE.
A note on Title Case rules
Style guides such as AP, Chicago and APA differ slightly on which small words stay lowercase. This tool follows a common approach that keeps articles, short conjunctions and short prepositions lowercase unless they start or end the title. Check your publication's style guide for edge cases.