You can populate numbers, names of months or weekdays easily by dragging your mouse. However, you can’t populate letters in the same fashion. In this guide, we're going to show you how to populate Alphabet letters in Excel using three different methods.

## Introduction

Let us first take a look at how character sets work in Excel. There are two built-in functions which are related to converting numbers into characters:

We can use these functions to convert numbers and letters from one another to populate letters in Excel.

## Simpler Method

Uppercase and lowercase letters in ASCII character set reside between the numbers 65-90 and 97-122, respectively. 65 = A, 66 = B, 90 = Z, 106 = j, etc. Using character conversion formulas like **CHAR**, we can convert this numbers to corresponding letters.

**Syntax**

**Example**

*returns “y”*

The challenge for this approach is generating *numbers* for the **CHAR **function. As explained in the previous section, you need numbers between 65 and 90 or 97 and 122 for letters. For this, you can use the **SEQUENCE** function at this step. The **SEQUENCE **function can generate an array of *sequential* numbers automatically.

All you need to do is to supply how many numbers you need, and which number to start with.

**Syntax**

**Example**

*returns an array of numbers between 65 and 90*

The function above returns numbers into 26 *rows* and *single* column. If you want to generate numbers or letters like in our example, you can use a formula like *=SEQUENCE(1,26,65)*.

Let’s combine both functions to create formula for populating letters of the alphabet.

**Syntax**

**Example**

## Using the **CODE** function for populating letters of the alphabet

Excel's has the **CODE** function works in opposite way of the **CHAR**. The **CODE **function simply returns the corresponding *number* of the given character in a character set.

**Syntax**

**Example**

*returns 99*

As a result, the **CODE **function with the character can be replaced with the number itself. The following is an example for using this formula.

**Syntax**

**Example**

## Dynamic character interval

Using the **CODE **function, we can improve the model by following a more dynamic approach. We can replace the hard coded letters like “A” or “Z” with cell references containing these characters. This approach allows us to change the start and end characters of alphabet letters without updating the formula.

**Syntax**

**Example**

## Using LET function to populate Alphabet letters

This is an optional step for populating alphabet letters in Excel. The relatively new **LET** function allows you to create named ranges inside the context of its own formula.

The syntax of the **LET** function contains the actual formula which using determined *name-value* pairs.

**Syntax of the LET function**

**Syntax of our model with the LET function**

**Example**

We defined named ranges for *Start* and *Finish* as CODE(M7) and CODE(M6) respectively. Each name is replaced with the corresponding **CODE** function block.