Developer tool
Caesar Cipher
Encrypt and decrypt text using a configurable Caesar shift directly in your browser.
Processing details depend on the tool. Check its input and output notes before using it with sensitive material.
Use the toolNo account required
Only English A-Z and a-z letters shift. Numbers, punctuation, whitespace and Unicode characters stay unchanged.
Any whole number is accepted and normalized modulo 26.
Alphabet preview
Original
ABCDEFGHIJKLMNOPQRSTUVWXYZShifted
DEFGHIJKLMNOPQRSTUVWXYZABCLowercase
defghijklmnopqrstuvwxyzabcROT13 is a Caesar cipher with a shift of 13. Caesar Cipher is a classical substitution cipher and is not suitable for protecting sensitive or confidential data. All processing happens locally in your browser.
How to use
Steps for this workflow
- Enter or paste the value in the tool's input field.
- Choose an operation or options when shown.
- Run the tool, inspect the output, and copy or download it if available.
Input and output
Encrypt and decrypt text using a configurable Caesar shift directly in your browser.