Updated October 9, 2026
Case Converter
Paste your text, pick one of seven letter cases, and copy the result with one click. Perfect for fixing caps-lock accidents, formatting titles and naming things in code.
The seven cases
- UPPERCASE: every letter capitalized. For headings and emphasis.
- lowercase: every letter small. For emails and informal text.
- Title Case: every word capitalized. For titles and headlines.
- Sentence case: only the first letter of each sentence capitalized. For normal prose.
- camelCase: words joined, each new word capitalized except the first. For variable names in code.
- snake_case: words joined with underscores, all lowercase. For file names and database fields.
- kebab-case: words joined with hyphens, all lowercase. For URLs and CSS classes.
Worked example
"the quick brown fox" becomes THE QUICK BROWN FOX in uppercase, The Quick Brown Fox in title case, theQuickBrownFox in camelCase, the_quick_brown_fox in snake_case, and the-quick-brown-fox in kebab-case.
Limitations
Title case capitalizes every word, including small words like and that some style guides keep lowercase. Sentence case lowercases everything first, so intentional capitals inside sentences (like iPhone) are flattened; check brand names afterwards.
Planning estimate only. Results use the list prices shown and may differ from your actual bill. Terms
Frequently asked questions
What is Title Case?
Capitalizing the first letter of every word, like The Quick Brown Fox. It is the standard style for book titles, headlines and headings.
When should I use snake_case vs camelCase?
Use snake_case for file names, database columns and Python variables; camelCase for JavaScript variables; kebab-case for URLs and CSS classes. Each language community has its convention.
Does it handle French, Spanish and Japanese?
Yes for Latin scripts including French and Spanish accents. For scripts without letter case, like Japanese kana, the text passes through unchanged.
Can it fix text stuck in ALL CAPS?
Yes. Paste the all-caps text and pick lowercase or sentence case to normalize it instantly.
Is my text uploaded?
No. Conversion happens entirely in your browser; nothing is uploaded or stored.