
Case Converter
Change the letter case of any text in one place. Paste your text and instantly see it in UPPERCASE, lowercase, Title Case, Sentence case, and the programming cases — camelCase, PascalCase, snake_case, and kebab-case — each copyable with a click.
UPPERCASE
—
lowercase
—
Title Case
—
Sentence case
—
camelCase
—
PascalCase
—
snake_case
—
kebab-case
—
How to Use
Type or paste your text into the box. Every case format updates live below, so you don't need to press a button. Click Copy next to the format you need. It's ideal for fixing text typed in the wrong case, formatting headings, or converting variable names between coding conventions.
Why This Tool Is Useful
Retyping text just to fix its case is tedious, and some conversions — like Title Case or camelCase — are fiddly to do by hand. This tool handles all the common formats at once, including the naming conventions developers switch between constantly. It's handy for writers cleaning up copy, students formatting titles, and programmers renaming variables.
The Text Case Formats
Everyday writing uses a few standard cases: UPPERCASE (all capitals), lowercase (no capitals), Title Case (each major word capitalized), and Sentence case (only the first word and proper nouns capitalized).
The table below shows each format applied to the same phrase so you can see the difference at a glance.
Programming Cases (camel, Pascal, snake, kebab)
Developers use several naming conventions, and different languages and style guides prefer different ones. camelCase (firstWord lowercase, later words capitalized) is common in JavaScript; PascalCase (every word capitalized) is used for class names; snake_case (lowercase with underscores) is common in Python and databases; and kebab-case (lowercase with hyphens) is used in URLs and CSS.
This tool converts between all of them, so you can paste a variable name in one convention and copy it in another.
When to Use Each Case
Title Case suits headlines and titles. Sentence case is the modern choice for UI text and subheadings. UPPERCASE draws attention but is hard to read in long blocks. For code, follow your project's style guide — consistency matters more than which convention you pick.
Tips
A few things worth knowing:
- Title Case rules vary — some styles lowercase short words like 'and' or 'the'; this tool capitalizes every word.
- Everything runs in your browser, so your text is never uploaded.
- For URL slugs specifically, our Slug Generator also strips accents and punctuation.
The Same Phrase in Every Case
| Case | Example |
|---|---|
| UPPERCASE | HELLO WORLD |
| lowercase | hello world |
| Title Case | Hello World |
| Sentence case | Hello world |
| camelCase | helloWorld |
| PascalCase | HelloWorld |
| snake_case | hello_world |
| kebab-case | hello-world |