ROT13 Encoder/Decoder

Encode and decode text with the ROT13 cipher. Simple letter substitution, works directly in your browser, no registration required.

How ROT13 Works

ROT13 rotates each letter 13 places in the alphabet

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Letter Mapping Reference

A โ†” N B โ†” O
C โ†” P D โ†” Q
E โ†” R F โ†” S
G โ†” T H โ†” U
I โ†” V J โ†” W
K โ†” X L โ†” Y
M โ†” Z N โ†” A
O โ†” B P โ†” C

How to use ROT13 Encoder/Decoder

  1. Enter or paste your text into the input field.
  2. Select either 'Encode' or 'Decode' to process your text.
  3. View the converted ROT13 text instantly.
  4. Copy or download the result for your use.

Features

  • Processes plain text instantly for quick obfuscation.
  • Supports encoding and decoding in a single, simple tool.
  • No software installation required; works directly in your browser.
  • Preserves original formatting, numbers, and special characters.

Who Is This Tool For?

Useful for programmers, puzzle creators, and anyone needing to casually hide spoilers or lightly obscure text without encryption.

Why Use ROT13 Text Encoding?

ROT13 encoding is a classic, reversible cipher perfect for obscuring text spoilers in forums, hiding puzzle answers, or performing simple data transformations in programming scripts, offering a lightweight obfuscation method without the complexity of true encryption.

Frequently Asked Questions

Is this ROT13 tool free?

Does the tool store my input text?

What does this tool do?

Is ROT13 secure for real secrets?

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