Case Converter

Instantly reformat text between eight casing styles. Paste your source string into the input textarea, pick one of the eight converter buttons, and the transformed output appears in the result card with a one-click copy button. Word boundaries are detected by splitting on camelCase transitions, all-uppercase runs followed by a capitalized word, and separators such as underscores and hyphens.

1. Type or paste text into the Input Text textarea (6 rows, monospace). 2. Click one of the Convert To buttons (UPPER, lower, Title Case, Sentence case, camelCase, snake_case, kebab-case, PascalCase). 3. Review the converted text in the Result card. 4. Click Copy to write the result to your clipboard.

UPPER and lower apply wholesale uppercase/lowercase. Title Case capitalizes the first letter of every whitespace-delimited word and lowercases the rest. Sentence case lowercases the body and capitalizes the first letter after sentence terminators (. ! ?). camelCase, snake_case, kebab-case, and PascalCase share the same word-splitting routine: they insert a space at lower-to-uppercase transitions, split all-caps runs before a capitalized suffix, and treat underscores/hyphens as separators, then rejoin with the appropriate casing or separator.