Case Converter

About the Case Converter

Changing the capitalization of text by hand is tedious and error-prone — and retyping a heading in Title Case or turning a label into snake_case breaks your flow. This converter does it instantly: paste your text once and see it rendered in every common case at the same time, then copy the exact version you need.

It runs entirely in your browser, so nothing you paste is uploaded or stored. Whether it's a private document heading or a variable name from your codebase, the text stays on your device.

Every case, explained

• UPPERCASE and lowercase — the basics, applied to the whole string.
• Title Case — capitalizes the first letter of every word, great for headings and titles.
• Sentence case — capitalizes the first letter of each sentence and lowercases the rest, like normal prose.
• camelCase and PascalCase — no spaces, words joined with capitals; the staples of variables and class names.
• snake_case, kebab-case, CONSTANT_CASE, and dot.case — separator styles used across code, file names, CSS, and config.
• Slug — a clean, lowercase, hyphenated, URL-friendly version for links and filenames.
• aLtErNaTiNg and InVeRsE — for fun, emphasis, or flipping the case of existing text.

Who uses it

• Writers and editors fixing headings, titles, and ALL-CAPS pastes.
• Developers converting between variable, constant, and file-name conventions.
• Marketers and bloggers turning a title into a tidy URL slug.
• Anyone who pasted something in the wrong case and doesn't want to retype it.

No account, no upload — paste, pick a case, copy.

Related tools