Encoding & Decoding

ROT13 and ROT47 Cipher

Apply the classic ROT13 letter rotation, or ROT47 which covers digits and printable ASCII. Because rotation is symmetric, encoding and decoding use the same operation.

EncodeCipher

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Quick actions

Copy this tool URL or open the system share sheet on a supported device.

Use cases

  • Obscure spoilers or casual plaintext
  • Solve basic CTF rotation challenges

How to use

  1. Enter plaintext or ciphertext
  2. Choose ROT13 or ROT47
  3. Copy the rotated result

Example input and output

Plain

hello

ROT13

uryyb

FAQ

Is Chinese supported?

No. ROT13 targets Latin letters. ROT47 works on a printable ASCII range, not Chinese characters.

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