Case ConverterPrivate, Instant, In Your Browser
Paste text once and switch it between six cases: UPPERCASE, lowercase, Title Case, Sentence case, and the two programmer favourites — camelCase and snake_case. One click converts, another copies the result to your clipboard. It's the fix for headlines typed with caps lock on, SHOUTING emails, and variable names that need renaming in bulk. The conversion is pure string work in your browser; your text never travels anywhere.
Converted with plain string operations on your device — nothing is transmitted.
Frequently Asked Questions
What's the difference between Title Case and Sentence case?
Title Case Capitalizes Every Word, the way headlines are often set. Sentence case capitalizes only the first word of each sentence, like ordinary prose. Pick by destination: headings usually want the first, body text the second.
When would I use camelCase or snake_case?
They're programming conventions: camelCase (firstSecondThird) is standard in JavaScript and Java, snake_case (first_second_third) in Python, Ruby and SQL. The converter strips punctuation and joins the words accordingly — useful for turning labels into identifiers.
Does the copy button send my text anywhere?
No — it uses your browser's own clipboard API, which moves the text from the page directly to your clipboard. Like the conversion itself, it involves no network traffic at all.
How much text can I convert?
As much as your browser can hold in a textarea — entire documents are fine. Because everything is local there's no request-size limit and no rate limit.