Text Case Converter

Convert text between upper, lower, title, sentence, snake_case, camelCase, kebab-case, and CONSTANT_CASE instantly.

Nothing is uploaded—use it to clean pasted snippets or compose shareable variants in one place.

Other languages: ja | en

What you can do

Convert text

Paste text

Clean the text, then convert. Everything stays on your device.

Converted cases

UPPER CASE


          

lower case


          

Title Case


          

Sentence case


          

snake_case


          

camelCase


          

kebab-case


          

CONSTANT_CASE


          

Frequently asked questions

Will my text leave the browser?

No. All conversions run locally in your browser, so clipboard text or drafts never leave your device.

How do trim and normalize options work?

Trim removes whitespace at the start and end. Normalize spaces collapses multiple spaces or line breaks into a single space before converting.