Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase and snake_case.
Start typing above to see all 11 case conversions at once — your original text is never changed.
Why you’ll love Case Converter
Instant & free
No signup, no paywall, no limits — Case Converter works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Made for makers
Fast, keyboard-friendly and precise — handy for writers and developers alike.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
About Case Converter
This case converter rewrites whatever you type into eleven different styles at once — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, dot.case and aLtErNaTiNg cAsE — and updates every one live as you edit. Each result has its own copy button, so you grab the exact style you need in one tap. Your original text in the box is never altered.
The programming styles map to real naming conventions. camelCase and PascalCase are the norm for JavaScript variables and class names; snake_case suits Python and database columns; CONSTANT_CASE is the convention for environment variables and config constants; kebab-case is what URLs, CSS classes and file names expect; and dot.case shows up in property paths and config keys. Title Case and Sentence case are for prose — headings, buttons and email copy — while alternating case is mostly for memes.
Everything runs entirely in your browser with plain JavaScript. Nothing is uploaded, logged or sent to a server, so you can safely paste code, private notes or client copy. Because it is pure string transformation, the output is instant and identical every time — no rate limits and no waiting on a network round-trip.
Popular uses
Frequently asked questions
They are naming conventions for joining multiple words without spaces. camelCase lowercases the first word and capitalises the rest (myUserName); PascalCase capitalises every word including the first (MyUserName) and is typical for class names; snake_case joins words with underscores in lowercase (my_user_name) and is common in Python and SQL. This tool produces all three from the same input, so you can match whatever your codebase uses.
It capitalises the first letter of every word and lowercases the rest. This is the simple, predictable form of title case — it does not skip short words like "a", "of" or "the", so it is not styled to AP or Chicago headline rules. If you need those exceptions you can quickly lowercase the small words by hand after copying.
Those formats are meant to be safe as identifiers, URL slugs and file names, so any run of non-letter, non-number characters is collapsed into a single separator (underscore, hyphen or dot) and leading or trailing separators are trimmed. That guarantees the output is a valid variable name, slug or class name you can paste straight into code.
No. The box at the top keeps exactly what you typed. The eleven conversions are shown separately below it, each with its own copy button, so you can experiment freely and copy just the one style you want without losing your source text.
Case Converter is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
No practical limit — it all runs in your browser, so paste as much as you need.
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