Pasted text stuck in the wrong case — a headline in all caps, a paragraph typed with Caps Lock on, or a heading that needs proper title case? This free case converter fixes it in one click: paste your text, pick a format, and copy the result. It covers everyday formats (UPPERCASE, lowercase, Title Case, Sentence case) and developer formats (camelCase, PascalCase, snake_case, kebab-case). Everything runs in your browser, so nothing is uploaded, nothing is stored, and no signup is needed.
How to use this case converter
Three quick steps — no signup, no cost.
Type or paste anything from a single word to a whole document into the input box.
Choose UPPERCASE, lowercase, Title Case, Sentence case, or one of the developer formats — the result updates at once.
Copy the converted text and paste it wherever it belongs. No account, no download, no waiting.
Why this case converter covers both writing and code
One tool for headlines, documents, filenames, and variable names.
Beyond upper and lower case, it handles Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case.
Only the letter case and, for developer formats, the separators change — your wording and word order are untouched.
Conversion follows your browser’s Unicode rules, so letters like é and ñ convert rather than breaking.
Your text never leaves your device, because the conversion happens in your browser.
Which case format should you pick?
Match the format to where the text will live.
For headlines and titles, use Title Case. It capitalises the first letter of every word. Note the honest caveat most simple converters share: this tool capitalises every word, including small words like “of” and “the”, while style guides such as AP and Chicago usually keep those lowercase unless they start the title — so give a converted headline a quick read and lowercase the small words by hand if your house style needs it.
For body copy, use Sentence case. It lowercases everything, then capitalises the first letter of each sentence. It cannot know which words are names, so check proper nouns afterwards.
For code and identifiers, use a developer format. camelCase suits JavaScript-style variables, PascalCase suits type and class names, snake_case suits Python-style names and database columns, and kebab-case suits URL slugs and CSS classes.
Case Converter FAQs
Short, direct answers to the questions readers ask most.
No. It only changes letter case, and developer formats also replace spaces with separators — the words themselves and their order stay the same.
No — this tool capitalises every word, which is the safest simple default. Lowercase “a”, “of”, “the” and similar words by hand if your style guide requires it.
Sentence case capitalises only the first letter of the text, like a normal sentence, while Title Case capitalises the first letter of every word, like a headline.
Yes. It runs entirely in your browser — no account, no signup, and nothing is uploaded.
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