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Free Online ROT13 Encoder and Decoder

Apply the reversible ROT13 substitution to Latin letters.

Your input stays on this device. Processing is bounded; regex runs in a worker with a two-second timeout.

Result



How to use ROT13 Encoder and Decoder
Apply the reversible ROT13 substitution to Latin letters.
  1. Set Text.
  2. Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Apply the reversible ROT13 substitution to Latin letters. The example below demonstrates Text.
Example input:
{
  "text": "Hello"
}
Expected result (relevant fields):
"Uryyb"
Features & result limitations
Apply the reversible ROT13 substitution to Latin letters.
Frequently asked questions
What inputs does ROT13 Encoder and Decoder accept?
Text
How should I interpret the ROT13 Encoder and Decoder result?
Apply the reversible ROT13 substitution to Latin letters.
Where does ROT13 Encoder and Decoder process my data?
Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.