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A1Z26 Cipher

A1Z26 Cipher

Convert letters to their alphabet positions and decode number sequences back into text using the A1Z26 notation. Supports multiple alphabets and customizable delimiters.

Input
0 chars · 0 bytes
Try:
Result
✓ Each letter maps to its alphabet position ✓ Multiple alphabets supported ✓ Customizable delimiters ✓ We never store your messages
Examples
Encode with dash delimiter
Input HELLO WORLD
Output 8-5-12-12-15 23-15-18-12-4

Alphabet: English, delimiter: dash.

Decode number sequence
Input 8-5-12-12-15 23-15-18-12-4
Output hello world

Alphabet: English, delimiter: dash, mode: decrypt.

Encode with space delimiter
Input SECRET
Output 19 5 3 18 5 20

Alphabet: English, delimiter: space.

Alphabet position reference
Input ABCXYZ
Output 1-2-3-24-25-26

Shows how letters are mapped to their positions in the alphabet.

How A1Z26 works

A1Z26 is a simple letter-to-number substitution system where each letter is replaced by its position in the alphabet. In English, A=1, B=2, C=3, and so on until Z=26.

During encoding, text is converted into a sequence of numbers. During decoding, the numbers are converted back into letters using the selected alphabet.

A1Z26 is commonly used in educational exercises, puzzles, treasure hunts, escape rooms, and beginner cryptography challenges.

Letter–Number Reference (English Alphabet)
A 1 B 2 C 3 D 4 E 5 F 6 G 7 H 8 I 9 J 10 K 11 L 12 M 13 N 14 O 15 P 16 Q 17 R 18 S 19 T 20 U 21 V 22 W 23 X 24 Y 25 Z 26
FAQ

Yes. You can choose either dash, space, comma, slash, dot in settings depending on your input format.

Unsupported symbols are kept as-is in encode mode and passed through in decode mode.

No. It is a simple substitution notation and should be used for learning or puzzle tasks.

A1Z26 is usually considered a simple substitution notation rather than a secure cipher. It replaces letters with their alphabet positions.

A1Z26 is often used in puzzles, educational activities, treasure hunts, escape rooms, and introductory cryptography exercises.

Yes. The tool supports multiple delimiters including spaces, commas, slashes, dots, and dashes.
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