Free · in your browser
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case instantly. Free, fast and private: your text never leaves your device.
Private by design — your text is processed locally and never uploaded.
How to convert text case online
- Type or paste your text into the box above.
- Click a case button — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case. The text is transformed in place.
- Use Copy to grab the result, or Clear to start over.
Why use a case converter?
Retyping text just to fix its capitalisation is slow and error-prone — especially when you have switched a heading to all caps by accident or need to turn a sentence into a code-friendly identifier. A case converter does it instantly: change UPPERCASE to lowercase for clean copy, apply Title Case to headlines, or reshape a phrase into camelCase, snake_case or kebab-case for variables, file names and URL slugs. Everything runs in your browser, so even private text stays on your machine and there is nothing to upload or install.
Frequently asked questions
Is this case converter free and private?
Yes — it is 100% free with no sign-up, and completely private. Your text is transformed in your browser with plain JavaScript; nothing is ever uploaded to a server.
How do I convert uppercase to lowercase?
Paste your text, then click the lowercase button. The whole block is converted to lowercase instantly. Use the UPPERCASE button to go the other way.
What is Title Case vs Sentence case?
Title Case capitalises the first letter of every word (great for headings), while Sentence case capitalises only the first letter of each sentence (natural prose).
Can it make camelCase, snake_case and kebab-case?
Yes. Those buttons split your text into words and join them as camelCase, snake_case or kebab-case — ideal for variable names, file names and URL slugs.