ROT13 Encoder / Decoder
Apply the ROT13 cipher to any text. ROT13 replaces each letter with the letter 13 positions ahead in the alphabet. Since ROT13 is symmetrical, applying it twice returns the original text — making it both encoder and decoder in one. Used for hiding spoilers and puzzle solutions.
Input
ROT13 Output
Result will appear here...How to Use ROT13 Encoder / Decoder
- 1Paste text to encode or decode
- 2ROT13 is applied in real time
- 3Apply again to decode
Your Privacy is Protected
ROT13 Encoder / Decoder runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
Is ROT13 encryption secure?
No. ROT13 is a simple substitution cipher with no key. It is used for obfuscation, not security.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
rot13rot13 encoderrot13 decodercaesar ciphertext cipher online