ROT13 / ROT47 Converter
Apply ROT13 or ROT47 ciphers instantly. Perfect for quick, reversible text obfuscation and puzzles.
How it works
Frequently Asked Questions
What is the difference between ROT13 and ROT47?
ROT13 rotates standard English letters (A-Z and a-z) by 13 positions, leaving numbers and punctuation unchanged. In contrast, ROT47 rotates 94 printable ASCII characters (from '!' to '~') by 47 positions, obfuscating letters, numbers, and symbols alike.
How do I decode a ROT13 or ROT47 message?
Both ROT13 and ROT47 are self-inverting (symmetric) ciphers. To decode an encoded message, simply run it through the same algorithm again (e.g., applying ROT13 twice restores the original text).
Is ROT13 or ROT47 secure for sensitive passwords?
No. ROT13 and ROT47 are obfuscation techniques commonly used for hiding spoilers, hints in geocaching, or online puzzles. They provide zero cryptographic security and should never be used to protect passwords or sensitive financial data.
How does ROT47 treat spaces?
ROT47 preserves whitespace characters (standard spaces, line breaks, and tabs) as-is while rotating all non-whitespace ASCII characters from decimal 33 to 126.
