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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






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?

Decryption requires only to know the used alphabet (usually the latin alphabet with 26 characters).

One has to replace each letter with its position in the alphabet (A = 1, B = 2, ... Z = 26)

DCODE becomes 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

1.12.16.8.1.2.5.20 gives ALPHABET.

How to recognize Letter-to-Number ciphered text?

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 (ASCIIhref code).

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

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

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

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

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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 (free / freeware), any algorithm, applet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any snippet or function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in PHP (or 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 !

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