Caesar Cipher Tool

Encode or decode text using the classic Caesar cipher. Free, secure, and works directly in your browser.

Mode

Input Text

Characters: 43

Shift Amount

Presets

Options

Output Text

Characters: 0

Cipher Wheel

Highlighted letters show the current shift

Frequency Analysis

Input Text

Output Text

Common Caesar Ciphers

ROT13
Shift of 13, commonly used in online forums
Caesar Cipher
Original cipher with shift of 3
ROT47
Shift of 47, includes punctuation and digits

How to use Caesar Cipher Tool

  1. Enter or paste your text into the input field.
  2. Select whether you want to encode or decode the text.
  3. Choose your desired shift value for the cipher.
  4. Click the 'Process' button to see your encrypted or decrypted result.

Features

  • Encode and decode text using a variable shift key.
  • Instant processing with a simple, clean interface.
  • Works with any alphabetic text, preserving case sensitivity.
  • Provides a classic, educational method for basic cryptography.
  • Accessible on all modern devices and web browsers.

Who Is This Tool For?

Ideal for students learning cryptography, puzzle creators, or anyone who needs a simple method to obscure or reveal text using a classic substitution cipher.

Why Use a Caesar Cipher?

The Caesar cipher is a foundational concept in cryptography, essential for understanding encryption principles and securing basic communications. This tool provides a practical way to experiment with substitution ciphers for educational purposes, puzzle creation, or introductory data obfuscation.

Frequently Asked Questions

Is this Caesar Cipher Tool free to use?

Is my text uploaded to a server or saved?

How do I use the Caesar cipher tool?

What type of text can I encode or decode?

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