Caesar Cipher

Encode and decode text using Caesar cipher with custom shift values. One of the oldest encryption methods.

Shift Value (1-25)

Enter the number of positions to shift each letter

Input Text

About Caesar Cipher

The Caesar cipher is one of the simplest and most widely known encryption techniques. It's a type of substitution cipher where each letter in the plaintext is shifted a certain number of places down the alphabet.

Key features:

Uses a fixed shift value (1-25)
Only affects letters A-Z and a-z
Numbers, symbols, and spaces remain unchanged
Can be easily broken with frequency analysis
ROT13 is a special case with shift value 13

Examples

Encoding (Shift 3):

Hello World

→ Khoor Zruog

Decoding (Shift 3):

Khoor Zruog

→ Hello World