ROT13 Encoder & Decoder
Apply ROT13 to encode or decode Latin text. Rotate letters by 13 positions and restore the original message with the same operation.
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How it works
Paste your content or load the example. Choose the available options, run the tool, then copy or download the result.
A practical example
Your text
Hello
Result
Uryyb
Frequently asked questions
Is my input sent to a server?
No. Your content is processed in this browser. It is never sent to the server or saved.
What should I know about ROT13 Encoder & Decoder?
ROT13 changes only A–Z letters and keeps case. Applying it twice returns the original input. It is an obfuscation method, not secure encryption. Use Caesar / ROTX for a different shift.