Professor Excel
Array Formulas in Excel

Array Formulas in Excel: All You Need to Know

Array formulas are an advanced topic in Excel. Usually Excel users discover them when reaching the limits of – let’s call them – normal formulas, e.g. SUM, VLOOKUP, COUNT and so on. This article provides an introduction of array formulas in Excel.


Count Number of Unique Records in Excel

Count Number of Unique Records in Excel: 5 Methods (+Download)

A common task in Excel is to find out the number of different entries in a list. For example, you have a list of names and want to know, how many different people are listed as some people might be multiple times on the list. This article introduces 5 different methods of counting the number of unique records in a list, regarding two major differences.

  1. You simply want to know the number of unique records. There is no other condition to be considered.
  2. You want to know the number of different entries under one or more conditions.


minif, maxif, minifs, maxifs, formula, excel

MINIF & MAXIF: 5 Ways to Get a Conditional Minimum Value

Until Excel 2016, there is no built-in MINIF-Formula in Excel. There are COUNTIF, SUMIF, AVERAGEIF but no MINIF nor MAXIF before the latest version. However, there are situations in which you need to get the minimum under a condition. In the following post, we are going to illustrate how to return the minimum using a simple example. We got an Excel table with two columns “Car type” and “Price”. We want to know the minimum price for each car type. Sounds easy? Unfortunately, Excel makes it unnecessarily difficult to calculate.