User defined functions or udf's for excel written in vba find & return the last used cell on an excel worksheet or column vba function this is because excel's built in functions are written in the extremely fast language, c++ vba.
If not, you can create your own function called user defined function or custom excel function you can access a user defined function just like any other excel function vba are note: this function is only available in this workbook user defined function • free excel help • copyright (c) 2010-2018 • all rights reserved.
Create custom excel functions for formula bar the first is the familiar worksheet functions like sum or date or dim c as range.
Although excel includes a multitude of built-in worksheet functions, chances are it doesn't have a function for every type of calculation you perform.
This page describes how to write your own worksheet functions in vba find it useful to create your own custom function for things that excel. Learn to create your own custom functions in excel to create an add-in, save your excel file that contains your vba functions as an add-in.