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.

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.

function browser

When creating user-defined functions (UDFs) in Excel, there are various categories where these custom functions can bring significant value. Here are some key areas where custom functions are often developed:

  1. Text and String Manipulation: UDFs can simplify complex text processing tasks, such as extracting specific string parts (like SUBSTRING), formatting text, or performing advanced searches and replacements within cells.
  2. Lookup: Custom functions (like DXLOOKUP and MLOOKUP) can create more flexible lookup mechanisms, such as searching based on multiple criteria.
  3. Logical: UDFs can enhance logical calculations (MINIF and MAXIF functions), making it easier to evaluate conditions, combine complex “IF” statements, or apply multiple criteria across different datasets.
  4. Range: These functions allow advanced range-based calculations, such as counting or summing cells that meet certain conditions or finding values between specified limits.
  5. Math: Functions like MAX_RANGE, MIN_RANGE, MAXSHEET, and MINSHEET provide flexible ways to find maximum or minimum values across ranges or multiple sheets, enhancing standard Excel capabilities.
  6. Date and Time: Functions like DATEDIFF and XDATE provide more flexible ways to calculate the difference between dates, find the number of days in a specific month, or work with dates beyond standard formats.
  7. Regex functions in Excel enable powerful text processing capabilities by leveraging regular expressions to perform complex pattern matching. The add-in supports all regex functions.