ROT13 Encoder
Shift every letter 13 places to hide spoilers or puzzle answers in plain sight.
ROT13 Encoder
ROT13 replaces every letter with the one 13 places further along the alphabet, so A becomes N and B becomes O. Numbers, spaces and punctuation stay as they are.
How to use ROT13 Encoder
- Type or paste your text into Content.
- Click Convert.
- Copy the scrambled text.
When it comes in handy
- Hiding spoilers, puzzle answers and punchlines so they are not read by accident.
- Teaching the basics of substitution ciphers.
- Lightly obscuring text in forums and old Usenet-style discussions.
Frequently asked questions
Is ROT13 secure?
No. It has no key and can be undone instantly, so it is for obscuring, not protecting. Use real encryption for anything sensitive.
How do I decode it?
Apply ROT13 again. Because the alphabet has 26 letters, shifting by 13 twice returns the original text.
