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ROT13 Cipher

ROT13 is a symmetric letter-substitution cipher for simple encoding and decoding.

Input text

ROT13 Result

Tip: Encrypt again to decrypt (ROT13 is symmetric). Only converts English letters.

Instructions

How to Use\n1. Enter the text to encrypt\n2. Click encrypt to get the ROT13 result\n3. Encrypt again to decrypt\n\n### Principle\n- Letters are shifted by 13 (A\u2194N, B\u2194O...)\n- Encryption and decryption use the same operation

FAQ

Is ROT13 secure?

ROT13 is not secure encryption; it is only for masking and fun.

Is Chinese converted?

Only English letters are converted; Chinese and symbols stay unchanged.

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What Is ROT13 Encryption and How Does It Work: A Three-Step Manual Calculation Method

This content clearly explains what ROT13 encryption is, its shift principle, and its difference from the Caesar cipher. It provides a three-step manual calculation method you can follow directly, and explains why Chinese does not participate in the conversion, how to use it on mobile, and its reasonable role in API debugging, helping you avoid mistaking it for a secure encryption method.

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