How to Quickly Convert VBA to JSON in 3 Minutes (Excel)

Written by Kasper Langmann

In the digital age, data conversion is a crucial skill. Whether you’re a data analyst, a developer, or simply someone who works with data regularly, knowing how to convert VBA to JSON in Excel can save you a lot of time and effort. This guide will walk you through the process, step by step, in just three minutes.

Understanding VBA and JSON

Before we dive into the conversion process, it’s important to understand what VBA and JSON are, and why you might need to convert between the two.

VBA, or Visual Basic for Applications, is a programming language developed by Microsoft. It’s primarily used for automating tasks in Microsoft Office applications, including Excel. If you’ve ever recorded a macro in Excel, you’ve used VBA.

JSON, on the other hand, stands for JavaScript Object Notation. It’s a lightweight data-interchange format that’s easy for humans to read and write, and easy for machines to parse and generate. JSON is often used when data is sent from a server to a web page.

So why might you need to convert VBA to JSON? One common reason is to make your Excel data more accessible to web applications. By converting your VBA data to JSON, you can easily send it over the internet and use it in a variety of web-based applications.

Preparing Your VBA Data

Before you can convert your VBA data to JSON, you’ll need to make sure it’s in the right format. This usually involves organizing your data into arrays or collections in VBA.

Arrays in VBA are similar to lists in other programming languages. They allow you to store multiple values in a single variable. Collections, on the other hand, are more like dictionaries. They allow you to store pairs of keys and values.

For the purposes of this guide, we’ll assume that your data is already organized into an array or collection. If it’s not, you’ll need to do this before you can proceed with the conversion process.

Converting VBA to JSON

Step 1: Install the VBA-JSON Library

The easiest way to convert VBA to JSON is to use a library that does most of the work for you. One such library is VBA-JSON, which is available for free on GitHub.

To install VBA-JSON, simply download the .bas file from the GitHub repository and import it into your Excel VBA editor. Once it’s imported, you’ll be able to use the functions provided by the library to convert your VBA data to JSON.

Step 2: Convert Your Data

Once you’ve installed the VBA-JSON library, converting your data is as simple as calling a single function. If your data is in an array, you’ll use the JsonConverter.ConvertToJson function. If it’s in a collection, you’ll use the JsonConverter.ConvertCollectionToJson function.

Both of these functions take your VBA data as an argument and return a JSON string. You can then use this string in your web application, or save it to a file for later use.

Step 3: Verify Your JSON

After you’ve converted your VBA data to JSON, it’s a good idea to verify that the conversion was successful. You can do this by pasting your JSON string into a JSON validator, such as JSONLint.

If your JSON is valid, the validator will confirm this. If it’s not, the validator will tell you where the errors are so you can fix them.


Converting VBA to JSON in Excel may seem like a daunting task, but with the right tools and a little bit of knowledge, it’s actually quite straightforward. By following the steps outlined in this guide, you can convert your VBA data to JSON in just three minutes.

Remember, the key to successful data conversion is preparation. Make sure your data is in the right format before you start the conversion process, and always verify your JSON after conversion to ensure it’s valid.

With these tips in mind, you’ll be well on your way to mastering the art of data conversion. Happy converting!