The worksheet below shows a classic example: SUMPRODUCT is used to calculate the sum of Price * Qty: The purpose of SUMPRODUCT is to calculate the sum of products. The video was created in Excel 365, so I am using the SUM function, but SUMPRODUCT would work just as well. If this concept is new to you, this video provides a basic overview. Note: as mentioned above, the technique of using SUMPRODUCT to solve general problems in Excel often involves some kind of Boolean logic. In the current version of Excel, these limitations are gone, so it is possible to use the SUM function instead. As a result, SUMPRODUCT has always been a simple way to create an array formula that "just works". In the past (Excel 2019 and older) Excel's formula engine did not handle most array operations without special handling. The main reason SUMPRODUCT appears so often in Excel formulas is that it supports array operations natively, and array operations combined with Boolean logic are a very good way to solve many problems in Excel. Why is SUMPRODUCT in so many Excel formulas? If you spend much time working with Excel formulas, you'll start to run into the SUMPRODUCT function a lot. SUMPRODUCT seems to be the catch-all, do-all, go-to solution for many seemingly unrelated Excel problems.
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