Case Converter — Change Text Case Online
Change text to uppercase, lowercase, title case, sentence case, alternating case or inverse case. The result stays in the editor, ready to copy or change again.
Up to 100,000 characters. Uses simple word and sentence rules; names, abbreviations and language-specific casing are not detected.
0 characters
🔒100% Private — Your files never leave your device. All processing runs locally in your browser.
How It Works
Change text to uppercase, lowercase, title case, sentence case, alternating case or inverse case. The result stays in the editor, ready to copy or change again.
Accented and other Unicode letters are handled without splitting emoji. Title and sentence case use simple rules; check names, acronyms and punctuation before publishing.
Features
- ✓Six text-case options
- ✓Unicode letter handling
- ✓Alternating case counts letters, not spaces
- ✓Copy or clear the edited text
- ✓Local processing, up to 100,000 characters
How to Use This Tool
- Paste your text.
- Choose a case option.
- Check the changed text.
- Copy the result.
Perfect For
- →Fix text pasted in all capitals
- →Format a draft heading
- →Change the case of a text block
Frequently Asked Questions
Uppercase, lowercase, title case, sentence case, alternating case and inverse case.
No. It capitalizes the first letter of each word with simple Unicode-aware rules. It does not recognize proper names or style-guide exceptions.
Letters alternate between lowercase and uppercase. Spaces, digits, punctuation and emoji do not advance the alternating pattern.
No. Lowercase, title and sentence conversion can change acronyms and names. Check the result before using it.
No. Case conversion happens locally. Inputs can contain up to 100,000 characters.