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Case Converter

Convert case

Switch between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, CONSTANT_CASE, and URL slugs instantly.

Runs in your browser. Your text stays on this device — nothing is uploaded for processing.

Writer modes

Title, sentence, and capitalize each word.

Developer modes

camelCase, PascalCase, snake_case, kebab-case.

SEO slug

Accent-stripped, hyphenated URL slugs.

Live

Result updates as you type.

Use the tool

Basic

Developer

SEO

How it works

Case rules applied locally

Transforms use Unicode-aware lowercasing and simple token splits. Slugs strip diacritics before hyphenating.

Three steps

  1. 1

    Enter text

    Paste a heading, identifier, or paragraph.

  2. 2

    Pick a format

    Choose a writer or developer case.

  3. 3

    Copy

    Clipboard or download the result.