This tutorial explains how to perform SUMPRODUCT in LibreOffice Calc.
SUMPRODUCT returns the sum of products of corresponding array elements. For example if you perform SUMPRODUCT in below example table –
It would return the result of (B2*C2+B3*C3+B4*C4+B5*C5).
The result would be (10*100+20*200+17*150+11*50) = 8100
This is the basic working principle of SUMPRODUCT which you can use for various needs. Here are some features/tricks of SUMPRODUCT.
Same Size Array
SUMPRODUCT arrays needs to be in same size, otherwise Calc would give #VALUE! Error. For example, if you change the formula to C2:C4, it will give you below error.
LibreOffice Calc can provide SUMPRODUCT up to 30 arrays.
Non-Numeric or alpha Values
If your ranges are having non-numeric values, Calc considers it as 0 and carry on with the SUMPRODUCT.
SUMPRODUCT behaves like SUM if only array/range is provided as below.
Advanced Usage of SUMPRODUCT
Count Items Using SUMPRODUCT in a Range
It is possible to achieve certain COUNTIF function results using SUMPRODUCT. For example, if you would like to count a specific string in a range of cells using SUMPRODUCT do the below.
Above formula breaks down to an array –
The double negative forces it to become
SUMPRODUCT uses this array to sum and shows the count = 2.
You can use other wild card (e.g. “?”) characters to achieve different results as explained in this tutorial.
Sum of all cells length
By combining LEN() function and SUMPRODUCT, you can find out the total length of a range of cells.
SUMPRODUCT is a powerful function and can be utilized in various ways. It can reduce the complications of using COUNTIF in certain cases and achieve identical results.
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