Convert text case in one click
Six formats, Unicode-aware, instant — and your text never leaves this tab.
For the accidental caps-lock paragraph and everything after
The classic rescue: a paragraph typed WITH CAPS LOCK ON — lowercase, then Sentence case, done. But case conversion is quietly a daily developer tool too: turning a headline into a kebab-case URL slug, a label into a snake_case variable name. Everything here is Unicode-aware string arithmetic running in your tab, which matters when the text you're pasting is an unpublished draft or internal copy.
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Frequently asked questions
How do I convert text to uppercase or lowercase?
Paste the text, hit UPPERCASE or lowercase — the transformation happens in place, instantly, and the Copy button puts the result on your clipboard.
What’s the difference between Title Case and Sentence case?
Title Case Capitalizes Every Word (headlines, book titles); Sentence case capitalizes only the first word of each sentence (normal prose). Fixing an ALL-CAPS paragraph: lowercase first, then Sentence case.
What are snake_case and kebab-case for?
Developer formats: snake_case joins words with underscores (variables, file names), kebab-case with hyphens (URLs, CSS classes). Both lowercase everything and strip punctuation.
Does it handle Turkish, German and other non-English letters?
Yes — transformations are Unicode-aware, so ç, ö, ü, ß and friends upper/lowercase correctly instead of being dropped.
Is my text stored or sent anywhere?
No. Case conversion is pure string arithmetic in this tab — no server, no autosave, no analytics on your content.