ROT13 Cipher - Encode & Decode

Apply the ROT13 substitution cipher to your text. Each letter is shifted 13 positions in the alphabet. Applying ROT13 twice returns the original text.

About ROT13 Encoder/Decoder

Apply the ROT13 substitution cipher to your text. Each letter is shifted 13 positions in the alphabet. Applying ROT13 twice returns the original text. This tool runs entirely in your browser - no data is sent to any server. Your text stays private and secure.

How to Use

  1. Enter or paste your text in the input area above
  2. Adjust any options if available
  3. Click "Process" or "Generate" to see results
  4. Use the "Copy" button to copy results to your clipboard

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