How is each letter's value determined?

By its position in the alphabet: a=1, b=2, c=3, and so on through z=26, regardless of whether the letter is uppercase or lowercase.

Are spaces, digits, and punctuation counted?

No. Only alphabetic characters contribute to the sum; everything else in the input is ignored.

What is 'average value per letter' for?

It's the sum divided by the number of letters counted, useful for comparing texts of different lengths on a per-letter basis.

Letter Sum Calculator Online - Add Up Letter Values

Overview

Introduction

Adding up the alphabet position of every letter in a word or phrase, a=1 through z=26, is a small technique that shows up in numerology, word puzzles, and quick name-value comparisons.

This tool does the addition for you instantly, and it runs entirely client-side, so nothing you paste is ever uploaded to a server.

What Is Letter Sum Calculator?

A calculator that sums the alphabet position of every letter in your text, case-insensitive, ignoring spaces, digits, and punctuation.

It runs entirely client-side as part of this site's String Tools collection, so nothing you paste is ever uploaded to a server.

How Letter Sum Calculator Works

The text is lowercased and every alphabetic character is matched, then each letter's value (its position from a=1 to z=26) is added to a running total.

The transformation happens synchronously in JavaScript the moment you type, with no network round trip involved.

When To Use Letter Sum Calculator

Use it to compare the letter-sum of two names or words, check a numerology-style calculation, or explore word-game puzzles based on letter values.

It's a fast way to get the answer without opening a spreadsheet or writing a one-off script just to check.

Often used alongside Word Counter, Text Statistics and Top Letter Finder.

Features

Advantages

Case-insensitive, so uppercase and lowercase input produce the same sum.
Reports both the total and the average value per letter in one pass.

Limitations

Only handles the basic Latin alphabet (a-z); accented and non-Latin letters are ignored, not scored.

Examples

Summing a short word

Input

cab

Output

Letter sum: 6
Letters counted: 3
Average value per letter: 2.00

c=3, a=1, b=2, which add up to 6 across 3 letters.

Best Practices & Notes

Best Practices

Strip out any unrelated text (like a title or label) before calculating if you only want the sum of a specific name or word.

Developer Notes

Implemented as `input.toLowerCase().match(/[a-z]/g)` to isolate letters, then each letter's value is derived from `letter.charCodeAt(0) - 96`, since lowercase 'a' has char code 97.

Letter Sum Calculator Use Cases

Comparing the letter-sum of two names or phrases
Numerology-style word or name calculations
Word-game and puzzle-solving involving letter values

Common Mistakes

Expecting accented letters or non-Latin scripts to be scored; only plain a-z letters are counted.

Tips

Use the Top Letter Finder alongside this tool if you also want to see which letters occur most often, not just their summed value.

Letter Sum Calculator