A1Z26 Cipher

Convert letters to numbers and back — A=1, B=2, all the way to Z=26.

Separator between lettersWords stay separated by a space.

Text

Result

How it maps

Each letter becomes its position in the alphabet: A=1, B=2, … Z=26. Non-letters are passed through unchanged. Decoding reverses it, so 8-5-12-12-15 = HELLO.

Free Online Tool

How to Use Examples Related Tools

How to Use A1Z26 Cipher

Choose Text → Numbers to encode or Numbers → Text to decode.
Type or paste your text or number sequence into the input box.
The result updates instantly; each letter maps to its alphabet position (A=1 … Z=26).
Use Copy to grab the result. Everything runs in your browser — nothing is uploaded.

Examples

Encode a phrase — input:

HELLO WORLD

Output:

8-5-12-12-15 23-15-18-12-4

Decode numbers — input:

3-1-20

Output:

CAT

Single letter — input:

Output:

Features

Privacy Focused

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

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