Convert text between uppercase, lowercase, and title case
🔒 Your text is processed locally
Retyping a sentence just to fix its capitalisation is tedious, and a shouty paragraph pasted from somewhere else is worse. This converter rewrites the case of your text in one click — useful for tidying up headings, fixing text that arrived in all caps, or rescuing a line you typed with Caps Lock on.
Your text is processed entirely inside your browser. Nothing is sent to a server, so whatever you paste stays on your own device.
UPPERCASE makes every letter a capital, and lowercase does the opposite. Title Case capitalises the first letter of each word, which is the convention for headings and titles. Sentence case capitalises only the first letter of each sentence and leaves the rest alone — the normal way to write prose.
tOGGLE flips the case of every letter, turning capitals into lowercase and vice versa. It sounds like a novelty, but it's exactly what you need when you've typed a whole line with Caps Lock stuck on: one click puts everything right. Note that Title Case here capitalises every word, including short ones like "of" and "the"; most style guides leave those lowercase, so give headings a quick read afterwards.
Title Case capitalises the first letter of every word, which suits headings. Sentence case capitalises only the first letter of each sentence, which is how ordinary paragraphs are written.
Yes — paste it in and click tOGGLE. It flips every letter's case, so a line typed as "hELLO tHERE" comes back as "Hello There".
Case only exists in alphabets that have capital and small letters, so Japanese, Chinese, and Korean characters pass through unchanged. Any Latin letters mixed in will still be converted.
No. The conversion runs locally in your browser, so nothing you type or paste ever leaves your device.