Letters to Numbers – Converter, Decoder and Chart

All 26 letters

A to M: numbers 1 to 13 13

A is 1 A is the 1st letter of the alphabet, the first one.
B is 2 B is the 2nd letter of the alphabet.
C is 3 C is the 3rd letter of the alphabet.
D is 4 D is the 4th letter of the alphabet.
E is 5 E is the 5th letter of the alphabet.
F is 6 F is the 6th letter of the alphabet.
G is 7 G is the 7th letter of the alphabet.
H is 8 H is the 8th letter of the alphabet.
I is 9 I is the 9th letter of the alphabet, the last whose number is a single digit.
J is 10 J is the 10th letter of the alphabet, the first whose number has two digits.
K is 11 K is the 11th letter of the alphabet.
L is 12 L is the 12th letter of the alphabet.
M is 13 M is the 13th letter of the alphabet, the last of the first half.

Show all 26 letters (13 more)

N to Z: numbers 14 to 26 13

N is 14 N is the 14th letter of the alphabet, the first of the second half.
O is 15 O is the 15th letter of the alphabet.
P is 16 P is the 16th letter of the alphabet.
Q is 17 Q is the 17th letter of the alphabet.
R is 18 R is the 18th letter of the alphabet.
S is 19 S is the 19th letter of the alphabet.
T is 20 T is the 20th letter of the alphabet.
U is 21 U is the 21st letter of the alphabet.
V is 22 V is the 22nd letter of the alphabet.
W is 23 W is the 23rd letter of the alphabet.
X is 24 X is the 24th letter of the alphabet.
Y is 25 Y is the 25th letter of the alphabet.
Z is 26 Z is the 26th letter of the alphabet, the last one.

How this list was compiled: Own work: each of the 26 letters of the English alphabet is given its place in alphabetical order, A 1 to Z 26, and nothing else. The rows follow that order, each was checked against it, and sample words were run through the page's own tool, there and back. The code's puzzle name, A1Z26, is as given on a public cipher-tools reference page, https://www.boxentriq.com/code-breaking/letters-to-numbers, read on 2026-10-01. Licence: own work

How it works

This letters to numbers code gives every letter its place in the alphabet: A is 1, B is 2 and Z is 26, so HELLO becomes 8-5-12-12-15. Swap makes the same box a number to letter decoder.

Read the full guide

Type letters, copy numbers

Type a word in Your text. A hyphen goes between the numbers of one word and a space between words, so 12 is always L and never A then B. Capitals and small letters give the same number. To decode numbers to letters, press Swap and type them with hyphens: 3-1-20 reads back as CAT. This letter to number converter codes letters only.

Letters of the alphabet numbered

The letter to number chart under the tool lists all 26 code letters in two halves: A to M are 1 to 13, and N to Z are 14 to 26. The code is also called A1Z26, so the page is an A1Z26 translator too.

From J on, every number has two digits. Without hyphens, 1212 could be ABAB, ABL, AUB, LAB or LL.
A number above 26 has no letter. Swap shows it in brackets and guesses nothing.

Questions and answers

How do I convert letters to numbers by hand?

Count each letter's place in the alphabet. A is 1, E is 5, J is 10, O is 15, T is 20 and Z is 26. Write a hyphen between the numbers, so that 1-2 and 12 stay apart.

What is the middle letter of the alphabet?

There is no single one. The alphabet has 26 letters, an even number, so the middle falls between M, the 13th letter, and N, the 14th.

What is this number to letter cipher called?

A1Z26, after its first and last pairs: A is 1 and Z is 26. It has no key, so anyone who knows the alphabet can read it. It is a code for puzzles, not for secrets.

How to decode a message with letters and numbers?

If every number is from 1 to 26, press Swap and type the message here. A message that mixes digits with only the letters A to F may be hexadecimal, another code, which this page does not read.

Is this a number code translator for any code?

No. It reads one number code, the one where 1 is A and 26 is Z. A phone keypad code, where 2 stands for A, B or C, is on the letter to phone number converter.