SUMPRODUCT Google Sheet Formula

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SUMPRODUCT Formula Syntax

=SUMPRODUCT(A1:A3, B1:B3)

Example Use Case

Multiplying and summing arrays for weighted totals or dot products

Understanding the SUMPRODUCT Formula

The SUMPRODUCT function in Excel multiplies corresponding elements of arrays and sums the results, a hybrid of multiplication and addition. It’s a powerhouse for weighted sums, dot products, or multi-column calculations.

SUMPRODUCT(A1:A3, B1:B3) with [1,2,3] and [4,5,6] returns 32 (1×4 + 2×5 + 3×6). It handles multiple ranges, ignoring non-numeric values, making it versatile for finance or vector math.

Why Use SUMPRODUCT?

SUMPRODUCT excels at array math—think total costs (price × quantity) or statistical correlations. Its ability to combine multiplication and summing in one step simplifies complex aggregations.

Example with Sample Data

ArraysFormulaResult
[1,2,3], [4,5,6]=SUMPRODUCT(A1:A3, B1:B3)32
[10,20], [2,3]=SUMPRODUCT(A1:A2, B1:B2)80
[5,5,5], [1,0,1]=SUMPRODUCT(A1:A3, B1:B3)10

SUMPRODUCT multiplies and sums: [1,2,3] × [4,5,6] is 32. It’s an array all-star.

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