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Text Case Converter

ConvertFree · No Account

Convert text to UPPER, lower, Title, camelCase, snake_case, kebab-case and more.

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Input
Select a case above
🔡
Type text, then click a case button above

All Case Conversions in One Place

Convert any text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE instantly. Use Live Preview for real-time updates as you type, or click a specific case button to convert on demand — perfect for developers renaming variables or writers fixing inconsistent heading styles.

What Each Case Format Is Used For

  • UPPERCASE — acronyms, headings, emphasis. Common in constants and SQL keywords.
  • lowercase — URLs, email addresses, CSS class names in some conventions.
  • Title Case — headings, book titles, article titles, proper nouns.
  • Sentence case — body text, captions, UI labels. Only the first word is capitalised.
  • camelCase — JavaScript variables and function names (myVariable), JSON keys.
  • PascalCase — JavaScript class names, React component names, TypeScript types (MyComponent).
  • snake_case — Python variables, database column names, file names in some projects (my_variable).
  • kebab-case — HTML attributes, CSS class names, URL slugs, npm package names (my-variable).
  • CONSTANT_CASE — environment variables, compile-time constants (MAX_RETRY_COUNT).
  • aLtErNaTiNg — memes, sarcasm. Not recommended for production code.

How to Use This Tool

  1. Paste or type any text into the input pane.
  2. Click a case button (UPPER, lower, Title, etc.) to convert and see the result instantly.
  3. Enable ⚡ Live Preview to see all 10 variants simultaneously as you type.
  4. Click Copy on any card to copy that variant to your clipboard.
  5. In Live mode, use Copy All to copy every variant at once.

Developer Naming Conventions Quick Reference

  • JavaScript / TypeScript: variables → camelCase, classes → PascalCase, constants → CONSTANT_CASE
  • Python: variables/functions → snake_case, classes → PascalCase, constants → CONSTANT_CASE
  • CSS / HTML: class names → kebab-case, custom properties → --kebab-case
  • Database: column names → snake_case, table names → snake_case
  • URLs / slugs: → kebab-case (e.g. /my-blog-post)
  • Go: exported identifiers → PascalCase, unexported → camelCase
  • Rust: variables/functions → snake_case, types/traits → PascalCase