ROT13 / ROT47

ROT13 / ROT47

Local Processing

Rotate text with ROT13 or ROT47 (apply again to undo).

How It Works & Processing Standards

Rotate text with ROT13 or ROT47 (apply again to undo).

Tool processing runs in your browser. If you create a calculator or conversion share link, its values are included in the URL. See the privacy policy for account, analytics and advertising data.

Current Limits

  • Maximum input length: 2,000,000 characters

ROT13 shifts letters by 13 (A↔N, B↔O). ROT47 shifts digits and symbols too, by 47. Encoding and decoding are the same operation, so one button goes both ways.

This is not security encryption; anyone can reverse it instantly.

What You Can Do

ROT13
Changes letters only; digits, symbols and other scripts stay.
ROT47
Changes all 94 ASCII characters from ! to ~.

How to Use ROT13 / ROT47

  1. 1
    Choose a taskROT13 or ROT47.
  2. 2
    Enter textPaste the text or already-rotated text.
  3. 3
    CopyCopy the result.

Examples

ROT13
Input: Hello, World!
Result: Uryyb, Jbeyq!
ROT47
Input: Hello, World!
Result: w6==@[ (@C=5P

Common Use Cases

  • Hiding quiz answers or spoilers from a casual glance
  • Solving ROT ciphers in puzzles or CTFs

Frequently Asked Questions (FAQ)

Why are non-Latin characters unchanged?

ROT13 covers only the Latin alphabet and ROT47 only ASCII, so other scripts and emoji stay as they are.

Have feedback or ideas for this tool? Suggest & Inquire →