Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case — paste text, pick a case, copy the result. 100% in your browser.
Paste your text below, choose a case format, and see the converted result instantly. Copy with one click. All transformations run in your browser \u2014 nothing is sent to a server.
How to convert text case
Paste your text
Drop your text into the input box — paste a document, title, variable name, or type directly.
Choose a case format
Select from 9 conversion formats. The output updates instantly.
Copy the result
Click the copy button to copy the converted text to your clipboard.
Key features
9 case formats
UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case.
Live conversion
The output updates instantly as you type or paste.
100% private
All conversions run locally in your browser — nothing is sent to a server.
Supported formats
- Plain text
- Markdown
- Code
- HTML
- CSV
Privacy and security
Limitations
- Case conversion uses common heuristics — complex identifiers may not convert perfectly.
- No file upload support — paste text only (no file input).
- Some Unicode characters may not convert as expected.
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Frequently asked questions
Is this tool free?
Yes — completely free, no sign-up required. All conversions run in your browser and nothing is sent to a server.
What case formats are supported?
We support UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, and kebab-case.
Do you store my text?
No. All transformations happen locally in your browser. Your text never leaves your device.
Can I convert large amounts of text?
There is no hard limit — everything runs in your browser. Very large texts may slow things down, but for normal documents it is instant.
Does it preserve my original text?
Yes. The input is never modified — your original text stays in the input box. The converted result appears in a separate output area.