Reformatting text between naming conventions is one of those tedious tasks that eats up time without adding value. Paste, convert, done.
The Case Converter at Ultimate Tools converts text between 8 common case formats instantly — built in React, works on any text.
Supported Case Formats
| Format | Example | Common use |
|---|---|---|
| camelCase | helloWorldFoo |
JavaScript variables, JSON keys |
| PascalCase | HelloWorldFoo |
React components, class names, TypeScript types |
| snake_case | hello_world_foo |
Python variables, database columns, file names |
| SCREAMING_SNAKE_CASE | HELLO_WORLD_FOO |
Constants, environment variables |
| kebab-case | hello-world-foo |
CSS classes, HTML attributes, URL slugs |
| Title Case | Hello World Foo |
Article titles, headings |
| UPPERCASE | HELLO WORLD FOO |
Emphasis, constants |
| lowercase | hello world foo |
General normalization |
How to Use
- Open the Case Converter
- Paste your text into the input field
- Click the target case format
- The converted text appears instantly — click to copy
Works on any text: variable names, sentences, lists of words, multi-line input.
Why Each Case Exists
camelCase — the default for JavaScript identifiers. firstName, getUserById, isLoading. Each word after the first starts with a capital.
PascalCase — same as camelCase but the first word is also capitalized. Used for class names and React components: UserProfile, ApiResponse.
snake_case — underscores between words. Python's standard, also used in database column names and many file naming conventions: user_id, created_at.
SCREAMING_SNAKE_CASE — snake_case but all caps. Universal convention for constants and environment variables: MAX_RETRY_COUNT, DATABASE_URL.
kebab-case — hyphens instead of underscores. Used in CSS (.nav-bar), HTML attributes (data-user-id), and URL paths (/blog/my-post-title).
Title Case — capitalizes the first letter of each word. For headlines and proper nouns.
Developer Use Cases
Rename API fields: An API returns first_name and last_name. You need firstName and lastName for your JavaScript model. Convert in one paste.
Generate CSS class names: Have a component name in PascalCase? Convert to kebab-case for the CSS selector.
Database column → code variable: Column name user_registration_date → JavaScript variable userRegistrationDate.
Normalize user input: Mixed-case strings from a form → consistent format before storage.
Slug generation: Blog post title "My Favorite Tools in 2026" → URL slug my-favorite-tools-in-2026.
Related Text Tools
- Word Counter — count words, characters, and reading time
- Lorem Ipsum Generator — generate placeholder text
- URL Encoder/Decoder — encode/decode URL-safe strings
- Markdown to HTML — convert Markdown to HTML
Convert text to any case format at the Case Converter — paste, click, copy.
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