Online ROT Cipher Tool
ROT13, ROT5, ROT47 and custom-shift Caesar cipher - encrypt and decrypt in one click, all processed locally
FAQ
ROT13 is a classic Caesar variant that shifts the alphabet by 13 positions. Since there are 26 letters, applying it twice restores the original - often used on forums to hide spoilers.
ROT5 shifts digits 0-9 by 5 positions; ROT47 shifts all printable ASCII (33-126) by 47 positions, so it can encrypt text containing symbols.
Yes. The slider ranges from -25 to +25; negative values shift backwards, e.g. shift -1 turns B into A.
No. Everything runs locally in your browser; your data never leaves your device.
ROT ciphers are simple substitution ciphers for educational and recreational use. They provide no real security and should not protect sensitive information.
Completely free. This is a pure frontend online tool - no registration required, no payment needed, just open and use.
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