Convert text between upper, lower, title, camel, snake, and more.
Everything is converted in your browser. Nothing you enter is sent anywhere.
Pick a case style. Conversion updates as you type. Nothing is uploaded.
Paste or type text to begin
Switch between UPPERCASE, title case, camelCase, snake_case, and more.
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Convert free text between common casing conventions — from prose styles like title and sentence case to programmer styles like camelCase, snake_case, and CONSTANT_CASE.
Identifier styles tokenize on spaces, underscores, hyphens, and camelCase boundaries so mixed inputs like userFirstName, user_first_name, and User First Name normalize consistently.
All conversion runs locally in your browser. Nothing you type is sent to a Dockzio server.
Practical guidance
Case conversion is useful for labels, headings, and individual identifiers. It applies mechanical rules; it does not know which acronyms, personal names, or brand spellings need to remain unchanged.
User First Name becomes userFirstName in camel case, UserFirstName in Pascal case, user_first_name in snake case, and user-first-name in kebab case. Existing camel-case boundaries, spaces, underscores, and hyphens help identify the words for these formats.
Identifier formats join the detected words into one value. Pasting several labels on separate lines can therefore combine them into one identifier. Use a single label per conversion and check the destination's rules: punctuation is not automatically removed, and the result is not validated as a programming-language identifier or URL slug.
Title case capitalizes words mechanically rather than following an editorial style guide. It can change NASA to Nasa. Sentence case lowercases the text before restoring selected initial letters, so proper names and acronyms need review. The boundary rules are limited and should not be treated as language-aware editing.
Do not apply a blanket conversion to passwords, API keys, file paths, or identifiers whose case carries meaning. Returning lowercase text to uppercase cannot recover the original capitalization. Keep the original and compare representative values before using converted text in an import or application.
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