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How to use ROT13 Encoder

Paste your text, and the tool shifts every letter 13 places through the alphabet — running it a second time on the result restores the original.

Frequently asked questions

What is ROT13?

ROT13 substitutes each letter with the letter 13 positions ahead in the alphabet.

Is ROT13 encryption?

No — ROT13 is not secure encryption. It's a simple substitution cipher used for light obfuscation.

Does it affect numbers and symbols?

No — only A—Z letters are shifted. Numbers, spaces, and symbols remain unchanged.

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