10 July, 2021

Complex Array formula

An array is a row or column of values, or a combination of them. Array formulas can be very useful in many applications where normal Excel formulas don't work. An array formula is a formula that can perform multiple calculations on one or more items in an array.

Array formulas can return either multiple results, or a single result. We can use array formulas to perform complex tasks, such as:

  • create quickly sample datasets
  • count some values contained in a range of cells
  • sum numbers that meet certain conditions, such as the lowest values in a range
  • sum every Nth value in a range of cells
  • find specific values in a cell or a range of cells
  • etc.   

The following example shows you how the single-cell array formula can find the last filled cell in a given row and show its value. Here is the formula (all entered in a single cell):