Free · browser-only · 13 cases

Case Converter — 13 Cases Instantly

Quick Answer: Paste any text and see Title Case, sentence case, UPPER, lower, camelCase + 8 more live. Click to copy. All conversions run locally — verify in DevTools Network.

What is a case converter?

A case converter changes letter casing without retyping. Our free case converter covers the full set users search: case converter (>10,000/mo, Hard), title case converter (>1,000), sentence case converter, upper case converter, lower case converter and capital case converter (>100 each). Writers fix headings, developers switch identifiers — all in one paste, no signup, no upload.

Case	Example	Best for
UPPER	HELLO WORLD	Headings, emphasis — upper case converter
lower	hello world	Normalize — lower case converter
Title Case	Hello World	Blog titles — title case converter
Sentence case	Hello world.	Prose — sentence case converter
camelCase	helloWorld	JavaScript vars
PascalCase	HelloWorld	Classes, components
snake_case	hello_world	Python, DB columns
kebab-case	hello-world	URLs, CSS
CONSTANT_CASE	HELLO_WORLD	Constants
dot.case	hello.world	Config keys
aLtErNaTiNg / InVeRsE	hElLo	Styling, fun

Try: paste hello World Test and toggle between Title Case, sentence case and camelCase to see the difference live.

How to convert case online — 3 steps

Paste or type into Input — 13 previews appear instantly.
Find your target: case converter online users usually want Title Case or sentence case; devs want snake/camel.
Click Copy on that card. No upload, no watermark, works with 10k+ characters.

When to use each case

Title Case converter — blog titles, YouTube titles (>1K/mo)
Upper/lower — normalize imported data (>100/mo each)
snake/kebab/camel — rename variables without regex

All handled by free case converter tool by opentexttools.online — no livekod.com redirect needed.

FAQ — case converter

Is the case converter private?

Yes — all 13 conversions run locally via JavaScript. No upload. Verify in DevTools Network: zero requests.

Does it handle code identifiers like XMLParser?

Yes — camelCase → snake_case correctly splits XMLParser → xml_parser and handles-kebab correctly.

What is title case vs sentence case?

Title Case capitalizes major words (Title Case Converter, >1K/mo). Sentence case capitalizes only the first word of each sentence — ideal for prose.

How many cases are supported?

13: UPPER, lower, Title Case, Sentence case, Capitalized, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, aLtErNaTiNg, InVeRsE.

Can I convert large text?

Yes — paste thousands of lines, previews update live and you can copy any case with one click. No character limit.