ROT13 Encoder
Encode text using ROT13 cipher
Text Input
0 chars
ROT13 Encoded
What is ROT13?
ROT13 is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. It's a special case of the Caesar cipher.
ROT13 is its own inverse - applying ROT13 twice returns the original text, making it useful for simple text obfuscation.
Common Uses
Spoiler Protection
Hide spoilers in forums and discussions by encoding sensitive content.
Simple Obfuscation
Basic text scrambling for puzzles and educational purposes.
Email Filtering
Avoid spam filters by encoding certain words in email content.