Caesar Cipher

Encode and decode text with a Caesar shift, including ROT13.

The Caesar Cipher shifts letters by a fixed amount to encode or decode text. It preserves case and non-letter characters, and includes a ROT13 shortcut.

Mode

Shift

Input

Output

Please enter some input.

How to use

Choose Encode or Decode mode.
Set a shift between 0 and 25, or press ROT13.
Enter text and copy the result.

Frequently asked questions

Is this secure encryption?

No, the Caesar cipher is a simple puzzle for learning and light obfuscation.

What does ROT13 do?

It applies a shift of 13, which is its own inverse.

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