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 updated: August 7, 2026 · Formulas verified by automated tests that block every release. Editorial review dates are shown in the sources block above.
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.