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ROT13 & Caesar Cipher: Rotate & Decrypt Text Online

Encode and decode messages using the ROT13 substitution cipher or examine all 25 possible Caesar rotation shifts at a glance.

Plain Text Input
Encoded Output

How to Use ROT13 & Caesar Cipher

  1. Type or paste your input into the editor above.
  2. Toggle between Encode and Decode mode depending on your input data.
  3. Inspect the live converted output instantaneously.
  4. Copy or download the transformed output with one click.

Practical Examples

Direct Transformation

Fast client-side ROT13 processing.

Input:
Hello
Output:
Uryyb

Common Mistakes & Troubleshooting

  • Mixing characters with separators: Ensure binary sequences have multiples of 8 bits and hex characters are valid 0-9 and a-f.

Frequently Asked Questions

Is ROT13 & Caesar Cipher secure?

All conversions happen 100% locally in your browser. Nothing is sent to our servers.