# SUMPRODUCT Function with Examples in LibreOffice Calc

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 –

=SUMPRODUCT(B2:B5,C2:C5)

It would return the result of (B2*C2+B3*C3+B4*C4+B5*C5).

I.e.

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.

## More Examples

### 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.

### Limits

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.

### Single Range

SUMPRODUCT behaves like SUM if only array/range is provided as below.

### 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.

=SUMPRODUCT(–(A1:A7=”galaxy”))

Above formula breaks down to an array –
{FALSE;FALSE;TRUE;FALSE;FALSE;TRUE;FALSE}

The double negative forces it to become
{0;0;1;0;0;1;0}

SEE ALSO:  Count Cells with Strings, Numbers Using COUNTIF Function - Calc

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.

## Conclusion

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.

Drop a comment if this article helped you or if you have any questions.

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