Case Converter
Paste once, get every case at once: upper, lower, title, sentence — plus camelCase, snake_case and kebab-case for the coders. One click to copy any of them.
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Last reviewed: July 20, 2026 · Formulas verified by automated tests before every release.
All seven cases, side by side
Unlike converters that make you click through modes, this one shows every transformation simultaneously — writers grab Title Case for a headline while developers grab kebab-case for a URL slug from the same paste. Everything is computed live in your browser; nothing is sent anywhere.
Quick conventions guide
- Headlines: US media lean Title Case; UK and most of the web lean Sentence case.
- URLs and file names: kebab-case — lowercase with hyphens is the SEO-friendly standard.
- Code: follow the language: camelCase (JS), snake_case (Python), PascalCase for class names.
Frequently asked questions
What is Title Case vs Sentence case?
Title Case Capitalizes Every Main Word — used in headlines and book titles. Sentence case capitalizes only the first word and proper nouns — standard for normal text and increasingly for UI and headings.
What are camelCase, snake_case and kebab-case for?
Programming conventions: camelCase for JavaScript variables, snake_case for Python and databases, kebab-case for URLs and CSS classes. The converter builds them from any phrase instantly.
How do I fix text typed with Caps Lock on?
Paste it and copy the "lowercase" or "Sentence case" row — the classic rescue for an accidentally SHOUTED paragraph.
Is my text uploaded anywhere?
No — conversion happens entirely in your browser. Paste anything with a clear conscience.