Security & Password

ROT13 Encoder / Decoder

Apply the ROT13 letter-rotation cipher; the same button encodes and decodes.

Cipher

ROT13 your text

Local only

Text

Everything stays in your browser

Your text is processed on your device — nothing is uploaded to a server.

ROT13 only hides text from a casual glance (for example spoilers). It is not encryption and gives no real security.

Good to know

How do I use it?

Paste or type into the box and press “Apply ROT13”. Then copy or download the result.

What should I know?

ROT13 only hides text from a casual glance (for example spoilers). It is not encryption and gives no real security.

Is my text uploaded?

No. It is processed in your browser and never sent to a server. No account is needed.