Toggle & Alternating Case Converter
Invert capitalization (AbC -> aBc), alternate letters (aBaB), or randomize case at any ratio.
A custom case converter that flips the capitalization of English text (Invert), alternates upper and lower case letter by letter (aBaB / AbAb), or scrambles case randomly at a ratio you choose. It's a favorite for writing memes, mocking SpongeBob text, and other eye-catching text effects.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Type or paste the English text you want to convert.
- Click the style you want: Invert Case, Alternating (starts lowercase), Alternating (starts uppercase), or Random.
- Check the converted text that appears instantly in the result box below and copy it.
FAQ
- Do numbers and non-Latin characters get changed too?
- No. Anything that isn't a Latin letter — numbers, punctuation, symbols, and non-Latin scripts such as Korean — is passed through exactly as you typed it. Only English letters are converted using the mode you picked.
- Do spaces count when alternating the case?
- Spaces and symbols are skipped in the alternation count, so the upper/lower rhythm advances only on actual letters. That's what keeps the output clean and consistent across words.
- If I click the random mode button again, will I get a different result each time?
- Yes. Random mode re-rolls the uppercase/lowercase choice for every letter on each click, so even with the exact same input text, you'll get a different result every time you press the button. Feel free to click repeatedly until you land on a combination you like.