A1Z26 Cipher
Encode text using the A1Z26 substitution cipher where A=1, B=2 … Z=26.
What is A1Z26 Cipher?
This A1Z26 cipher tool encodes text by converting each letter to its position in the alphabet (A=1, B=2, ... Z=26) and decodes number sequences back into letters. It's a classic substitution cipher used in puzzles, geocaching, and word games. As an a1z26 decoder and encoder in one, it handles both directions of this simple numeric letter-number cipher.
How It Works
For encoding, the tool maps each letter of your input to its 1-26 position in the alphabet and outputs the sequence of numbers, typically separated by spaces or hyphens, while leaving spaces and punctuation as configured. For decoding, it reverses the process by splitting the number sequence and converting each number back to its corresponding letter — a direct, one-to-one lookup with no cryptographic security involved.
Is It Safe to Use?
All encoding and decoding happens in your browser via JavaScript; your text is never transmitted to or stored on a server, so puzzle answers or personal messages stay private.
How to Use A1Z26 Cipher (Step-by-Step Guide)
- Enter your text to encode it into A1Z26 numbers, or enter numbers to decode them into letters.
- Select encode or decode mode.
- The tool instantly converts your input.
- Review the resulting number sequence or decoded text.
- Copy the output for use in puzzles, messages, or games.