Is this secure for passwords?

Absolutely not. ROT13 is incredibly easy to reverse. Use it only for hiding text from human eyes, not for protecting sensitive data.

Because the English alphabet has 26 letters. 13 is exactly half, making the cipher its own inverse (ROT13(ROT13(x)) = x).

ROT13 Encoder

ROT13 Encoder Overview

Encrypt/Decrypt using ROT13 cipher

ROT13 (Rotate by 13 places) is a classic text obfuscation method that replaces each letter with the letter 13 positions after it in the alphabet. Since the alphabet has 26 letters, applying ROT13 twice returns the original text. It is famously used in online forums (like Reddit or Usenet) to hide spoilers, punchlines, or puzzle solutions from casual glances without requiring a password. It is NOT secure encryption, but effective for 'spoiler tags'.

How to Use ROT13 Encoder

Type or paste the text you want to hide (or reveal).
The tool operates instantly—converting A->N, B->O, etc.
Click 'Copy' to save the result.
To decrypt, simply paste the ROT13 text back into the box.

Frequently Asked Questions

Is this secure for passwords?: Absolutely not. ROT13 is incredibly easy to reverse. Use it only for hiding text from human eyes, not for protecting sensitive data.
Why 13?: Because the English alphabet has 26 letters. 13 is exactly half, making the cipher its own inverse (ROT13(ROT13(x)) = x).

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