Text Case Converter

Change letter case or identifier style without overwriting what you pasted. Copy the converted result when you are ready.

How to use

Paste the text you want to convert. The original box is never replaced.
Pick a mode: lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case or kebab-case.
Copy the converted result from the output.

How it works

This page is the uppercase converter, lowercase converter, title case converter and camel case converter in one place. Lowercase and uppercase use the string’s Unicode case mapping.

Title Case capitalizes the first letter of each whitespace-separated word and lowercases the rest, leaving punctuation in place.

Sentence case lowercases the text, then capitalizes the first letter after the start or after . ! ?. Identifier styles (camelCase, PascalCase, snake_case, kebab-case) split on punctuation, whitespace and existing camelCase boundaries, then rejoin.

Separate URLs for each mode are not needed: the same text can be converted to any of them here.

Formula

lower / upper = Unicode case mapping
Title = first letter of each word
Sentence = first letter of each sentence
camel / Pascal / snake / kebab = tokens joined in that style

Worked examples

UPPERCASE
hello, world! → HELLO, WORLD!
lowercase
Hello, World! → hello, world!
Title Case
hello, world! → Hello, World!
camelCase
Free QR Code Generator → freeQrCodeGenerator
snake_case
alreadyMixedCASE words → already_mixed_case_words

Useful notes

Identifier conversions drop punctuation between words.
Your original text stays in the first box.
Conversion runs in your browser.

FAQ

Will this overwrite my original text?: No. The converted result is shown separately.
How is Title Case different from Sentence case?: Title Case capitalizes each word. Sentence case capitalizes the start of each sentence only.
What happens to punctuation in camelCase?: Punctuation is treated as a separator. “hello, world” becomes helloWorld.
Is there a separate uppercase or lowercase page?: No. Uppercase, lowercase, title case and camel case are modes on this converter.
Is my text uploaded?: No. Conversion runs in your browser.

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