A1Z26 Cipher — Letters to Numbers
Encode text as numbers (A=1, B=2 … Z=26) or decode numbers back to letters. Simple letter-to-number substitution cipher.
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A1Z26 Reference Table
A1
B2
C3
D4
E5
F6
G7
H8
I9
J10
K11
L12
M13
N14
O15
P16
Q17
R18
S19
T20
U21
V22
W23
X24
Y25
Z26
How to Use the A1Z26 Cipher — Letters to Numbers
- Enter or paste your text in the input field.
- The encoded or decoded result appears automatically.
- Copy the output using the copy button.
- Switch between encode and decode modes if available.
Referência Rápida
| De | Para |
|---|---|
| A | 1 |
| B | 2 |
| HELLO | 8-5-12-12-15 |
| Z | 26 |
| CAT | 3-1-20 |
| OK | 15-11 |
Casos de Uso
- •Encoding or decoding data for web development projects.
- •Learning about cryptography and different cipher techniques.
- •Preparing encoded content for APIs or data transmission.
- •Solving cipher puzzles, CTF challenges, or educational exercises.
Fórmula
A1Z26 assigns a number to each letter of the Latin alphabet: A=1, B=2, C=3 … Z=26. Numbers in the encoded message are separated by dashes; words are separated by slashes.
Perguntas Frequentes
What is the A1Z26 cipher?
A1Z26 is a simple substitution code where each letter is replaced by its position in the Latin alphabet: A=1, B=2, C=3, and so on up to Z=26. It is widely used in puzzles and escape rooms.
How are words separated in A1Z26?
In the encoded output, letters within a word are separated by dashes (e.g., H-E-L-L-O = 8-5-12-12-15) and words are separated by spaces or slashes (e.g., 8-5-12-12-15 / 23-15-18-12-4).
Does A1Z26 support Cyrillic or other alphabets?
The standard A1Z26 cipher is defined for the Latin alphabet only. Cyrillic and other alphabets do not have a universal number assignment.
Is A1Z26 secure?
No. A1Z26 is trivially breakable because there are only 26 possible values per letter and the mapping is fixed. It offers no security and is only used for games and puzzles.
How do I decode an A1Z26 message?
Split the message by dashes to get individual numbers. Look up each number in the table (1=A, 2=B … 26=Z). Slashes or spaces between groups indicate word boundaries.