Text Case Converter
Change text to UPPERCASE, lowercase, Title Case and more.
Writers fix headlines, developers normalize constants, and students repair accidental caps-lock essays — a case converter does it in one click.
How to use
- Paste your text into the box.
- Click the case style you want — it converts instantly.
- Hit Copy to grab the result.
About this tool
Title Case capitalizes the first letter of each word; Sentence case capitalizes only the start of each sentence.
Your text never leaves your browser.
How it works
Case conversion works on Unicode-aware rules, not just ASCII. UPPERCASE maps every letter to its capital form; lowercase does the reverse. Title Case capitalizes the first letter of each word, while Sentence case capitalizes only the first letter of each sentence and lowercases the rest.
Programmer styles follow naming conventions from code: camelCase joins words with each new word capitalized except the first (standard in JavaScript), snake_case joins with underscores (Python, databases), and kebab-case joins with hyphens (URLs, CSS). The transform runs character by character, so punctuation and numbers pass through untouched.
Worked examples
Fix shouting: Someone sent an email in ALL CAPS? One click converts it to sentence case.
Variable names: Turn "user account balance" into userAccountBalance (camelCase) or user_account_balance (snake_case) for code.
Quick reference
| Style | Example | Common use |
|---|---|---|
| UPPERCASE | HELLO WORLD | Headings, emphasis |
| lowercase | hello world | URLs, emails |
| Title Case | Hello World | Article headlines |
| Sentence case | Hello world | Body text |
| camelCase | helloWorld | JavaScript variables |
| snake_case | hello_world | Python, databases |
| kebab-case | hello-world | URLs, CSS classes |
Frequently asked questions
What is Title Case?
The first letter of each major word is capitalized — "The Quick Brown Fox".
Does it handle names like McDonald?
Simple converters capitalize the first letter after each space; unusual capitalizations may need a manual touch.
Is my text uploaded?
No — conversion happens entirely in your browser.
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