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Letter Number A=1, B=2, C=3

Tool to convert letters to numbers and vice versa. The Letter-to-Number Cipher (or Number-to-Letter Cipher) consists in replacing each letter by its position in the alphabet, for example A=1, B=2, Z=26.

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Letter Number A=1, B=2, C=3 -

Tag(s) : Cryptography, Substitution Cipher

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# Letter Number A=1, B=2, C=3

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## Number to Letter Converter

 Decryption Automatic (Simple cases) Brute-Force (w/o Separator)

## Letter to Number Encoder

Tool to convert letters to numbers and vice versa. The Letter-to-Number Cipher (or Number-to-Letter Cipher) consists in replacing each letter by its position in the alphabet, for example A=1, B=2, Z=26.

## Answers to Questions

### How to encrypt using Letter-to-Number cipher?

A1Z26 decryption requires only to know the alphabet (usually the latin alphabet with 26 characters) and to count ranks of each letter.

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

Replace each letter with its position in the alphabet (A = 1, B = 2, ... Z = 26)

Example: DCODE is encrypted 4-3-15-4-5

### How to decrypt Number-to-Letter cipher?

Decryption requires taking each number and replace it with the letter of same position in the alphabet. 1 = A, 2 = B, ... 26 = Z

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

Example: 1.12.16.8.1.2.5.20 gives ALPHABET

### How to recognize Letter-to-Number ciphertext?

The crypted message is made of numbers between 1 and 26, sometimes the number 0 is used.

The digit 5 for E is supposed to appear regularly for an english text.

### What are the variants of the Letter-to-Number cipher?

Shift of numbers: the alphabet can start with A = 0 or A = 1, but also A = 65 or A = 97 (ASCII code).

Use of a supplementary character for space (usually 0 or 27)

Use of leading zeros to be able to concatenate numbers AB = 0102, else AB = 12 and 12 = L.

Use of a custom alphabet, or reversed alphabet (A=26, Z=1)

Use of modulo 26 in order to get 1=A,2=B,...26=Z then 27=A, 28=B etc.

## Source code

dCode retains ownership of the source code of the script Letter Number A=1, B=2, C=3. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, etc.) which dCode owns rights can be transferred after sales quote. So if you need to download the Letter Number A=1, B=2, C=3 script for offline use, for you, your company or association, see you on contact page !

## Questions / Comments

Team dCode read all messages and answer them if you leave an email (not published). It is thanks to you that dCode has the best Letter Number A=1, B=2, C=3 tool. Thank you.

Source : http://www.dcode.fr/letter-number-cipher
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