DataFX Custom Functions Add-in

DataFX is a free function library and contains hundreds of user-defined functions for Microsoft Excel to create advanced formulas easily.

The tool is a part of our Excel Add-ins and contains 200+ high-performance user-defined functions (UDFs), each designed to simplify complex tasks and transform your experience with Excel.

How to use custom functions in Excel?

Leveraging the robust Intellisense Excel-DNA framework, our add-in provides native tooltips that seamlessly integrate with Excel. These offer context-sensitive hints and make the functions more accessible to users of all skill levels. This feature not only enriches the user experience but also aids in minimizing errors while crafting formulas.

datafx custom functions udf library

DataFX functions interact directly with Excel’s VBA object model. For example, without programming knowledge, you can easily compare, summarize, or count cells based on cell colors. You can use countless custom functions that go far beyond the capabilities of Excel’s default functions.

There’s no need to write endlessly long, LAMBDA-based formulas anymore.


Function Browser

The add-in includes a function browser to further assist users in navigating through the extensive collection of functions. This user-friendly interface categorizes functions, allowing quick access and an organized overview.

The current version of the add-in core functions, for example, DXLOOKUP, ensures XLOOKUP compatibility for all Microsoft Excel versions. Take a closer look at how useful the tool is. We update the library weekly and will implement more custom functions in the next few months.

function browser

This browser is an invaluable tool for users looking to optimize their workflow and use the full potential of the add-in’s offerings. Whether you are a financial analyst crunching numbers or cleaning data, our add-in is the Swiss knife that will improve your Excel projects to new heights of efficiency and style.


Download the library.