Note that you will only be able to use it in the workbook in which it was saved, it is not a global function.Developed in 2007, Numbers came with its share of shortcomings. Now you can use the TRIAREA function anytime you need to calculate the area of a triangle in your workbook. Fill out the Function Arguments dialog box and click OK.You should see the name you gave your function. In the Insert Function dialog box, select User Defined from the “select a category” dropdown list.Click Insert Function on the Formulas tab.Public Function TRIAREA(number1, number2)īack in your Excel workbook, place your cursor in the place where you wish to insert the custom function: When you are finished writing the code, save the function and close the editor. Here is simple sample code for our Triangle Area Function. The basic syntax of User Defined Function is:įunction myfunctionname (arguments) return typeĪdding “Public” to Function tells Excel to list your User Defined Function in the Insert Function dialog box. You will need to be familiar with VBA code to complete this step in your own work. Hit Alt + F11 or click the Visual Basic button the Developer tab.Ĭhoose Insert > Module in the VBA editor: Our arguments will be the base and the height. We are going to create a function to quickly calculate the area of a triangle: Area = Base times Height divided by 2, or A=BH/2. To create your custom function, you will first need to identify the arguments needed in your function. xlsm Macro-enabled workbook.įollow the steps below in a new, clean macro-enabled workbook of your own, or download 06-Custom Functions.xlsmto see the completed user defined function.Ī function creates a calculation based on variables input at the time the function is used. You will have to figure out the math on your own!īecause custom functions use VBA, your file must be saved as a. This article will show how to create a very simple custom function (area of a triangle) to demonstrate the steps. Even those who aren’t that familiar with VBA code can follow the steps below and create useful shortcuts to their calculations. While Excel is packed full of functions, you may find that you have proprietary formulas that you use regularly that would be useful as a function shortcut.Īdvanced Excel users who are comfortable with creating and editing macros will find creating custom functions a snap. Like a macro is to a series of steps, a function is to a longer equation. By Tepring Crocker Categories: Excel®, Functions Tags: custom function, user defined functionĮxcel functions are actually shortcuts to more complex calculations.
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