How to Quickly Calculate a Sum in VBA: Master it in 3 Minutes (Excel)

Written by Kasper Langmann

Visual Basic for Applications (VBA) is a programming language developed by Microsoft that is primarily used for automating tasks in Microsoft Office applications. One of the most common tasks in Excel is calculating a sum, and VBA can make this process much quicker and more efficient. This guide will walk you through the steps to quickly calculate a sum in VBA, and you’ll be a master at it in just three minutes.

Understanding VBA in Excel

VBA is an event-driven programming language that allows you to automate tasks in Excel. It is a powerful tool that can save you a lot of time if you know how to use it properly. VBA is often used for tasks that are repetitive or complex, such as calculating sums, averages, or other mathematical operations.

Before you can start using VBA to calculate sums, you need to understand how it works in Excel. VBA code is written in modules, which are stored in the Visual Basic Editor (VBE). To access the VBE, you can use the shortcut Alt + F11, or you can go to the Developer tab and click on Visual Basic.

Once you’re in the VBE, you can write your VBA code. The code is written in procedures, which are blocks of code that perform a specific task. There are two types of procedures in VBA: Sub procedures and Function procedures. Sub procedures are used for tasks that don’t return a value, while Function procedures are used for tasks that do return a value.

When you’re writing VBA code to calculate a sum, you’ll be using a Function procedure, because you want the procedure to return the sum of a range of cells.

Calculating a Sum in VBA

Now that you understand the basics of VBA in Excel, let’s dive into how to calculate a sum. The first step is to define the range of cells that you want to sum. You can do this by using the Range object, which represents a cell, a row, a column, a selection of cells containing one or more contiguous blocks of cells, or a 3D range.

Once you’ve defined your range, you can use the SUM function to calculate the sum of the cells in the range. The SUM function in VBA works the same way as it does in Excel: it adds up all the numbers in a range of cells.

Here’s an example of how you can use VBA to calculate the sum of a range of cells:

Function CalculateSum()
    Dim rng As Range
    Set rng = Range("A1:A10")
    CalculateSum = Application.WorksheetFunction.Sum(rng)
End Function

This VBA code defines a range of cells from A1 to A10, and then uses the SUM function to calculate the sum of these cells. The result is then returned by the Function procedure.

Mastering VBA in 3 Minutes

While VBA can seem intimidating at first, it’s actually quite straightforward once you get the hang of it. The key to mastering VBA in just three minutes is to understand the basics and then practice, practice, practice.

Start by understanding the structure of VBA code and how to access the VBE. Then, learn how to define a range of cells and how to use the SUM function. Once you’ve got these basics down, you can start experimenting with different ranges and functions.

Remember, the more you practice, the quicker you’ll become at writing VBA code. So don’t be discouraged if you don’t get it right the first time. Keep trying, and before you know it, you’ll be a master at calculating sums in VBA.


VBA is a powerful tool that can save you a lot of time in Excel. By understanding how to use VBA to calculate sums, you can automate one of the most common tasks in Excel and become more efficient in your work.

Remember, the key to mastering VBA is practice. So don’t be afraid to experiment with different ranges and functions. With a bit of practice, you’ll be able to calculate sums in VBA in just three minutes.