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ROT13 Encoder / Decoder

Apply the ROT13 letter-substitution cipher (its own inverse).

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How it works

Paste or type your text in the box and ROT13 Encoder / Decoder transforms it instantly — no button to press. The result updates live as you edit, runs entirely in your browser, and you can copy the output with one click.

Examples

  • “Hello World” → “Uryyb Jbeyq”

Frequently asked questions

How do I use the ROT13 Encoder / Decoder?

Paste or type your text into the input box. ROT13 Encoder / Decoder processes it live and shows the result immediately — then just copy it. There is no limit on how much text you can process.

Is my data private?

Yes. The ROT13 Encoder / Decoder runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.

Is the ROT13 Encoder / Decoder free?

Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on text tools and the rest of the platform, you can use it as often as you like.

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