Free text case converter

UPPERCASE changes letters to capitals; lowercase changes them to small letters. Title Case capitalizes the first letter of each word while preserving the original whitespace. Sentence case lowercases the text, then capitalizes its first letter and letters after sentence punctuation followed by whitespace.

camelCase and snake_case are useful for identifiers. They split each line at characters that are not letters or numbers, then join the words without separators or with underscores. Accented letters are retained, and empty lines remain empty.

• Title Case: “a quiet morning” → “A Quiet Morning”
• camelCase: “ação rápida” → “açãoRápida”
• snake_case: “ação rápida” → “ação_rápida”

Title Case and Sentence case keep the text’s original spaces and line breaks. camelCase and snake_case process each line independently, so a list of labels remains a list rather than becoming one long identifier.

Check the preview before copying, especially for names, acronyms, and writing systems with special capitalization rules. Case conversion changes letter casing; it does not translate words or determine which words should stay lowercase in a headline style guide.