About this tool
A case converter changes text into writing and programming naming styles without manual retyping. Choose UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, or dot.case. Alternating case and inverse case are also available for transformations based on character position or existing capitalization.
Conversion occurs entirely in your browser, so the source is never uploaded and is discarded when you close the tab. Each mode produces a separate result from the entered text, letting you try a natural text style or identifier convention quickly. Copy the converted text to your clipboard or download it for later use.
How to use the Case Converter
- 1Paste the words or identifiers into the source text area.
- 2Choose the exact writing or programming case you need.
- 3Review how spaces and word boundaries changed in the result.
- 4Try inverse or alternating mode for character-based capitalization changes.
- 5Copy the converted text or download it as a file.
Features
Twelve case styles
Switch among natural text capitalization, code identifiers, separators, alternating text, and inverse text.
camelCase identifier output
Join detected words with a lowercase first word and capitalized following words.
Separator case choices
Create snake_case, kebab-case, CONSTANT_CASE, or dot.case from the same input.
Character case effects
Alternate capitalization by position or invert each letter's existing uppercase state.
Copy download results
Send the selected conversion to the clipboard or save it as a local file.
Frequently asked questions
What is the difference between camelCase and PascalCase?
camelCase starts the first word with a lowercase letter. PascalCase capitalizes the first letter of every detected word.
Which case uses underscores between words?
snake_case uses lowercase words with underscores. CONSTANT_CASE also uses underscores but capitalizes all letters.
How does Sentence case differ from Title Case?
Sentence case capitalizes the beginning like ordinary natural text. Title Case capitalizes the detected words according to its title transformation.
What does inverse case do?
It changes uppercase letters to lowercase and lowercase letters to uppercase, preserving the rest of the text.
Is pasted text uploaded during case conversion?
No. All transformations happen locally, and no source or result is retained after you close the tab.