Case Converter
Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case. Bulk-line mode.
Quick answer: Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case. Bulk-line mode.
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Frequently asked questions
- How do I convert text to upper or lower case?
- Paste your text, click UPPER or lower, and copy the result. Use Title or Sentence case for headings; use camelCase, snake_case or kebab-case for code identifiers.
- What case styles are supported?
- UPPER, lower, Title Case, Sentence case, camelCase, snake_case and kebab-case — the full set you'd want for writing or code.
- What's the difference between Title and Sentence case?
- Title Case capitalises every important word ("The Quick Brown Fox"). Sentence case capitalises only the first word and proper nouns ("The quick brown fox").
- Can I convert camelCase or snake_case?
- Yes. We split on capital letters, underscores, hyphens and spaces, so any of these styles can be converted to any other.
- Can I convert case for multiple lines?
- Yes. Toggle Bulk lines mode and each line is converted independently — perfect for lists.
- Does this work with accents and non-English letters?
- Yes. The browser's locale-aware uppercase/lowercase rules are used, so accented characters like ñ, ö and é are handled correctly.
- Can I convert case on my phone?
- Yes. The tool works in any mobile browser.
- Why does my text formatting change?
- Case conversion only changes letters — line breaks, punctuation and spacing are kept exactly as you pasted them.
- Is this case converter free?
- Yes, free with no signup, no limits and no ads on the conversion itself.
- Is my text uploaded?
- No. Everything runs in your browser, so your text never leaves your device.