About this tool
ROT13 & Caesar Cipher — Encode and decode ROT13 or any Caesar shift cipher. Free, fast and private. Runs entirely in your browser at Quick Calci Tools.
Who uses the ROT13 & Caesar Cipher?
Common scenarios and audiences for this tool.
Puzzle sites
Quick ROT13 for spoiler tags or games.
Teachers
Introduce classical ciphers in crypto units.
Forum mods
Obfuscate spoilers with ROT13.
Students
Experiment with Caesar shift keys.
Writers
Lightweight text obscuring for drafts.
Frequently asked questions
Everything you need to know about the ROT13 & Caesar Cipher.