Numbers to Letters Converter

Enter up to eight numbers from 1 to 26 to convert each one into its matching letter (1=A, 2=B, … 26=Z), using the standard A1Z26 code.

Number 1

Number 2

Number 3

Number 4

Number 5

Number 6

Number 7

Number 8

What this calculator does

This is the reverse of the classic A1Z26 code: it converts numbers back into letters, where 1 becomes A, 2 becomes B, and so on up through 26 as Z.

How the calculation works

Each valid number from 1 to 26 is converted to a letter using its character code offset from ‘A’ (letter = character code 64 + the number). Numbers outside the 1-26 range are ignored since they don’t correspond to a letter of the alphabet.

This is a simple educational substitution code, not a secure form of encryption.

Last reviewed August 2026