How are words detected?

Input is split on spaces, hyphens, underscores, and boundaries before capital letters (A–Z). Non-alphanumeric characters are stripped from each token.

Why does API become a_p_i in snake_case?

Consecutive capitals are treated as separate word boundaries, so API splits into a, p, and i. Paste spaced words (api response) when you need to keep acronyms intact.

Are lower/upper locale-aware (Turkish İ, German ß)?

No. The tool uses default JavaScript casing and keeps only A–Z/a–z/0–9 tokens, so locale-specific letters may be stripped or mapped incorrectly. Prefer ASCII identifiers for code naming.

No. Conversion runs only in your browser.

Text Case Converter

camelCase, snake_case & More

Convert text to camelCase, PascalCase, snake_case, kebab-case, Title Case, and more. Live browser conversion with one-click copy—free online, no signup.

This conversion runs only in your browser — nothing is uploaded.

Characters0
Words0

Input

camelCase
PascalCase
snake_case
kebab-case
UPPER CASE
lower case
Title Case
Sentence case

What is this tool?

This text case converter turns a phrase, label, or identifier into eight naming styles at once: camelCase, PascalCase, snake_case, kebab-case, UPPER CASE, lower case, Title Case, and Sentence case.

It splits on whitespace, hyphens, underscores, and capital-letter boundaries, then strips non-alphanumeric characters from each token. That is handy for moving between human labels and code identifiers, but it can split acronyms (API → a, p, i) more aggressively than a human editor would.

Use it during refactors, schema design, CSS naming, file naming, API field mapping, and documentation cleanup.

Common use cases

Rename a variable or JSON field across camelCase / snake_case / kebab-case in one paste
Normalize a heading into Title Case or Sentence case for docs
Preview how a mixed identifier (getUserAPI) will expand before committing a rename

How to use

Paste a phrase, heading, or identifier. Results update as you type.
Use Sample to see space/underscore splits and consecutive-capital boundaries.
Copy one case row, or Copy all labeled lines from the toolbar.
Manually fix acronyms and non-ASCII letters—automated casing is not locale-aware.

Examples

Input	camelCase	snake_case	kebab-case	Notes
`hello world`	`helloWorld`	`hello_world`	`hello-world`	Common developer naming set.
`api response id`	`apiResponseId`	`api_response_id`	`api-response-id`	Spaced words keep acronyms together.
`getUserAPI Response — hello_world`	`getUserAPIResponseHelloWorld`	`get_user_a_p_i_response_hello_world`	`get-user-a-p-i-response-hello-world`	Sample: `API` splits to `a`/`p`/`i`.
`İstanbul`	`stanbul`	`stanbul`	`stanbul`	Non A–Z letters can be stripped; not Turkish locale casing.

Also generated for the same input: PascalCase, UPPER CASE, lower case, Title Case, and Sentence case.

Practical pitfalls

Locale lower/upper is not applied. Default JS casing plus an A–Z/a–z/0–9 filter means Turkish İ/ı, German ß, and many non-Latin letters are dropped or mishandled—use ASCII for code identifiers.
Consecutive capitals (HTTP, API) become single-letter tokens; prefer spaced input when you care about acronyms.
Punctuation and em dashes are removed during tokenization, so Hello—World may collapse differently than Hello World.

References

Last reviewed: 2026-07-27

Frequently asked questions

Which case styles are generated?: Eight at once: camelCase, PascalCase, snake_case, kebab-case, UPPER CASE, lower case, Title Case, and Sentence case. Copy one row or all labeled lines.
How are words detected?: Input is split on spaces, hyphens, underscores, and boundaries before capital letters (A–Z). Non-alphanumeric characters are stripped from each token.
Why does API become a_p_i in snake_case?: Consecutive capitals are treated as separate word boundaries, so API splits into a, p, and i. Paste spaced words (api response) when you need to keep acronyms intact.
Are lower/upper locale-aware (Turkish İ, German ß)?: No. The tool uses default JavaScript casing and keeps only A–Z/a–z/0–9 tokens, so locale-specific letters may be stripped or mapped incorrectly. Prefer ASCII identifiers for code naming.
Is text uploaded?: No. Conversion runs only in your browser.