Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
Free · No sign-up · Runs locally in your browser · Also available in Chinese (中文)
What is Case Converter?
A case converter rewrites text into any standard letter-casing convention with one click. What is trivial by hand for two words becomes tedious for a hundred — product names, column headers and constants lists all need consistent casing.
Beyond the basics, the tool covers the programming conventions that are painful to apply by hand: camelCase and PascalCase for code identifiers, snake_case for database columns, kebab-case for URLs and CSS, and Title Case for headings with small words handled correctly.
How to use it
- 1Paste your text into the input area.
- 2Click the target format — UPPER, lower, Title, camelCase, snake_case or kebab-case.
- 3The converted text replaces the preview instantly.
- 4Copy the result back to your editor or spreadsheet.
Common use cases
- Turning a spreadsheet column of names into snake_case identifiers for a database import.
- Normalizing titles to Title Case before publishing.
- Quickly uppercasing a list of constants or environment variable names.
Frequently asked questions
▸How does camelCase handle multi-word input?
Words are split on spaces, hyphens and underscores, then re-joined with the first word lowercased and each following word capitalized — so 'user name field' becomes userNameField.
▸Is my text uploaded anywhere?
No. Conversion happens entirely in your browser; the text never leaves your device.