HomeCaesar Cipher Encrypt/Decrypt

Caesar Cipher Encrypt/Decrypt

Classic Caesar cipher (shift) encrypt/decrypt tool with custom shift and one-click copy

Input text

Shift
Range 1-25
Shift:
3
Only English letters (A-Z / a-z) are shifted. Numbers and symbols stay unchanged.

Result

The result will appear here


Documentation

This tool encrypts and decrypts text using the Caesar cipher, with configurable shift values and instant output.

Key Features

  • Encryption/decryption with shift 1-25
  • Linked numeric input and range slider
  • Load example, clear, and copy result
  • Local processing in browser

Steps

  1. Enter plaintext or ciphertext.
  2. Set the shift value.
  3. Click encrypt or decrypt.
  4. Copy the output.

Use Cases

  • Classical cryptography demonstrations
  • Beginner learning exercises
  • Text transformation experiments

Notes

  • Caesar cipher is cryptographically weak and easily brute-forced.
  • Do not use it for real security communication.
  • Recommended for education and demos only.