Free Case Converter — UPPER, lower, Title, snake_case, camelCase

Launch the tool

freecaseconverter.app

Open Case Converter →

Features

UPPERCASE, lowercase, Title Case, Sentence case
camelCase, PascalCase (for programming)
snake_case, kebab-case, CONSTANT_CASE
Inverted case (iNVERT whatever you type)
Works on any text length
No signup, ad-free, works offline
Copy result with one click

How it works

Open freecaseconverter.app
Type or paste text
Click the case button you want
Copy the result

Common use cases

Converting variable names between programming conventions
Fixing ALL-CAPS pasted content
Generating kebab-case URLs from titles
Creating snake_case identifiers from regular text
Converting between data formats with different case styles

How it compares

ConvertCase.net has ads. Programming-specific converters handle only some transformations. Freecaseconverter has all 10 common transformations on one page, ad-free.

Privacy

All conversions happen in your browser. No network requests.

Frequently asked questions

Is Freecaseconverter free?

Yes. Free with no signup, ads, or limits.

What is the difference between Title Case and Sentence case?

Title Case capitalizes major words (like in article titles). Sentence case capitalizes only the first letter of each sentence.

What is CONSTANT_CASE?

Uppercase with underscores between words. Used for constants in many programming languages (e.g., MAX_BUFFER_SIZE).

Does it handle accented characters?

Yes. Unicode-aware — é, ñ, ü, etc. convert correctly.

Is there a character limit?

No. Works on arbitrary text length (bounded by browser memory).

Can I chain conversions?

Yes. Apply one conversion, then another, to reach a specific output.

Free Case Converter — 10 transformations for any text