TEXT ROTATIONS AND MORSE

ROT13 decoder

Choose a rotation or Morse. The result updates after a short pause; switch off auto mode to run it with Ctrl/Cmd + Enter.

ROT13 decoder

Input text

Result

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Conversion options

Input limit: 100000 UTF-16 units.

Enter text or load an example.

A spoiler marked with ROT13 or a puzzle full of dots and dashes is easier to inspect when the original and result stay side by side. This ROT13 decoder also lets you compare how ROT47 treats symbols and how Caesar shifts letters.

The ROT13 decoder preserves anything outside its alphabet and reports how many characters stayed unchanged. For Morse, the page points to the first unsupported character or code group instead of silently dropping it.

Why use this ROT13 decoder?

One text workspace for four deliberate methods.

See what each rotation actually changes

The ROT13 decoder rotates A–Z only; ROT47 rotates printable ASCII, including digits and punctuation. A visible unchanged-character count helps you spot Unicode that was never encoded.

Latin letters rotate while digits and non-ASCII characters remain in place beside a ROT47 comparison.

Morse mistakes have an exact location

A bad Morse group or unsupported source character stops conversion and reports its line and column. You can correct the source before copying an incomplete answer.

A Morse dot-dash group is marked at its error position; copying is disabled.

Three details that prevent wrong answers

01

Pick a method before reading the result

ROT13 and ROT47 undo themselves when applied twice. Caesar needs the same shift and the opposite direction to reverse a message.

  • Switching method immediately makes the previous result unavailable to copy.
02

Check the character range

The ROT13 decoder leaves non-ASCII letters, digits and symbols intact; ROT47 also rotates printable digits and punctuation. Morse accepts a fixed Latin alphabet, digits and common punctuation.

  • A preserved count means those characters were not transformed.
03

Read Morse separators

One space separates letters and a slash separates words. The decoder rejects unknown groups with a position rather than guessing the intended code.

  • Manual mode also runs with Ctrl/Cmd + Enter.

Choose the exact transformation

ROT47 encoder

ROT47 moves printable ASCII characters by 47 positions, while spaces and non-ASCII characters remain unchanged.

Caesar cipher decoder

Select a shift from 1 to 25 and a direction. The result keeps letter case and leaves punctuation intact.

Morse code translator

Encode Latin letters, digits and supported punctuation, or decode dot-dash groups separated by spaces and /; errors identify the offending input.

Character ranges and limits

No secret protection
ROT13, ROT47, Caesar and Morse are reversible puzzles, not encryption. Never use the ROT13 decoder as a way to protect passwords or private data.
ASCII rotation only
ROT13 and Caesar rotate A–Z; ROT47 rotates ASCII 33–126. Other non-whitespace characters pass through unchanged and are counted, not translated.
Strict Morse text
Unsupported characters and unknown dot-dash tokens stop conversion. Spaces divide letters and / divides words; custom symbols, audio and nonstandard Chinese mappings are not accepted.
Known shift required
Caesar needs a shift from 1 to 25. This page does not guess the key or list every possible decoding; input is limited to 100,000 UTF-16 units.

ROT13 decoder questions

How do I decode a Caesar cipher without knowing the shift?

This page needs the shift you want to test; it does not brute-force 25 candidates. If the result is unreadable, try the known shift in the opposite direction or use a dedicated solver.

Why is ROT13 the same for encoding and decoding?

ROT13 moves letters halfway around the 26-letter alphabet. Applying the same rotation twice makes a full turn and restores the original letters.

What is the difference between ROT13 and ROT47?

ROT13 changes only Latin letters; ROT47 changes printable ASCII, including numbers and punctuation. Both are self-inverse and leave other Unicode untouched.

Is a Caesar cipher secure enough to protect real data?

No. Anyone can reverse these methods. Use ROT13 for spoilers and puzzles, never for actual secrecy or credential storage.

Does the tool keep the original letter case and punctuation?

ROT13 and Caesar retain case and punctuation; ROT47 deliberately rotates printable punctuation. Spaces remain, and the panel reports other characters it preserved.

Still have a question?

Try the ROT13 decoder now

Choose ROT13, ROT47, Caesar or Morse and inspect a result before exporting.