CodesBeautify

ROT13 to Text

Paste ROT13 text and read what it says, including the digit rotating variant.

ROT13
Text
Runs locally in your browser

About the ROT13 to Text

Reversing ROT13 needs no key and no guesswork, because the transformation is its own inverse. Paste the scrambled text and the readable version appears at once, with the layout of the original intact: line breaks, indentation, punctuation and spacing are all left where they were.

You will meet ROT13 in forum spoiler blocks, in the hints on puzzle and geocaching sites, inside capture the flag challenges as a first stage before something harder, and occasionally in configuration files where a developer wanted a value to be non obvious to a casual reader. Recognising it is easy once you know the pattern: short English words look wrong in a characteristic way, with the appearing as gur and a as n.

If the letters resolve but the numbers still look wrong, the sender used the ROT13.5 variant that shifts digits by five as well. Tick the option and the digits fall into place too. Anything outside the ASCII letters, and outside the digits when that option is on, is passed through untouched.

When the output remains gibberish the text was not ROT13. Try Caesar Cipher, which sweeps every possible shift, or ROT47 if the input contains a lot of punctuation. To hide text yourself, use Text to ROT13.

How to use

  1. Paste the ROT13 text into the left pane.
  2. Read the result on the right; no key or password is needed.
  3. If digits still look wrong, tick Also rotate digits for the ROT13.5 variant.

Common questions

How can I tell text is ROT13 rather than another cipher?
Look for the very common word the appearing as gur, and single letter a appearing as n. Both are strong giveaways.
The output is still unreadable. What else could it be?
Probably a different shift. Caesar Cipher can try all twenty five, and ROT47 covers text with heavy punctuation.
Does this tool need to know the key?
There is no key. ROT13 always shifts by thirteen, which is why the same operation encodes and decodes.
Will my line breaks be preserved?
Yes. Only letters change, so paragraphs, indentation and spacing come through exactly as pasted.