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A1Z26 cipher

Letters to Numbers Converter

Turn letters into numbers (A=1, B=2 … Z=26) or numbers back into letters. Perfect for padlock codes, secret notes and escape room puzzles.

Words are split with a slash ( / ).
Separate numbers with
Letter sum All the numbers added up, a handy lock code too.
0

Letters to numbers chart

Every letter of the alphabet and its number. The trick to remember: A is 1, M is 13 and Z is 26.

  • 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

How to use the A1Z26 cipher

  1. Write each letter as its place in the alphabet: A is 1, B is 2 and so on up to Z, which is 26.

  2. Put a dash or space between the numbers of a word, and a slash between words, so 8-9 / 13-15-13 reads HI MOM.

  3. To decode, swap each number back for its letter. Add the numbers up to make a padlock code.

Use letters to numbers in your own escape room

Turn a word into a padlock code: CAT becomes 3-1-20, or add the numbers for a single code. Hide the word somewhere in the room and let players work out the combination. Our printable escape rooms are full of puzzles like this, ready to print and play tonight.

Letters to numbers questions

What is the A1Z26 cipher?

A1Z26 is a simple cipher that swaps each letter for its position in the alphabet, from A=1 to Z=26. The name comes from the first and last pairs, A1 and Z26.

What number is each letter in the 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 and Z=26.

How do I turn a word into a lock code?

Convert each letter to its number, so DOG becomes 4-15-7, and use those numbers as the combination. For a 3 or 4 digit lock, you can also add the numbers together: DOG adds up to 26.

Is this tool free?

Yes. It is free to use for puzzles, classrooms, games and secret messages, with no signup.