Case Converter
Change text to UPPERCASE, lowercase, Title Case, camelCase or snake_case.
How do you convert text to uppercase, lowercase or camelCase online?
Docuboxer's case converter switches any text between ten formats instantly: UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg case, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. Paste or type your text, pick the format you need, and copy or download the result right away — nothing to wait for, nothing to reload. Title Case follows standard English style rules, leaving short articles, conjunctions and prepositions like "a", "the", "and" or "of" lowercase unless they open the text. The programming-oriented formats — camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE — automatically strip accented characters so the output is a valid identifier in virtually any language, while the other modes keep diacritics untouched. Everything runs locally in your browser: your text is never uploaded anywhere, the tool keeps working offline once the page has loaded, and it's completely free with no signup and no character limit.
How to use Case Converter
- Type or paste the text you want to transform into the input box on the left.
- Pick one of the ten available formats: UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg case, camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE.
- Check the live result on the right panel, along with the character, word and line counters.
- Copy the result to your clipboard with one click, or download it as a .txt file.
Common use cases
Fixing text typed with Caps Lock stuck on
Instantly fix a paragraph you accidentally typed in all caps, without retyping it letter by letter.
Naming variables and functions consistently
Turn a descriptive phrase into camelCase or PascalCase to name variables, functions or components that match your codebase's style guide.
Generating environment variables and constants
Convert readable labels into CONSTANT_CASE or snake_case for .env keys, configuration constants or database column names.
Formatting headlines and titles
Apply Title Case to article headlines, slide titles or page headings so they follow a consistent typographic style throughout a document.
Cleaning up imported data lists
Normalize case in emails, categories or tags imported from a spreadsheet before loading them into a database or CRM.
Frequently asked questions
How do I convert text to uppercase online?
Paste your text into the input box, click the UPPERCASE button above it, and the converted text appears instantly on the right — ready to copy or download.
Does Title Case capitalize every word?
No. It follows standard English style: the first word is always capitalized, but short articles, conjunctions and prepositions like "a", "the", "of" or "and" stay lowercase unless they open the text.
Why does camelCase strip accented characters?
Because its main use is generating code identifiers, and most programming languages don't accept accented letters or special characters in variable names. The other case modes keep accents untouched.
What's the difference between snake_case and kebab-case?
snake_case separates words with an underscore (my_variable) and is the standard in Python and SQL; kebab-case uses a hyphen (my-variable) and is common in URLs and file names.
Is my text uploaded to a server?
No. The conversion happens entirely in your browser using JavaScript. Your text never leaves your device, and the tool keeps working even after you disconnect from the internet.
Is there a character limit, or does it cost anything?
No. It's free, with no signup and no practical character limit — convert anything from a single word to a full document.