Atbash Cipher - Ancient Encryption Tool
Free Online Tool

Hill Cipher

Encrypt text using matrix multiplication with the polygraphic Hill cipher system.

How to Use Hill Cipher

  1. Enter or paste your text in the input field
  2. Select your desired options (if available)
  3. Click the encode/decode button or watch real-time conversion
  4. Copy the result using the copy button

Examples

Input:

Hello World

Output:

Features

Privacy Focused

All processing happens in your browser. No data is sent to servers.

Free Forever

No registration, no limits, completely free to use.