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Number.Sqrt is a Power Query M function that returns the square root of a given number. The function returns null if the input is null, and Number.NaN if the input is a negative value.

Compatible with: Power BI Service Power BI Desktop Excel Microsoft 365


Number.Sqrt( number as nullable number ) as nullable number


Returns the square root of number. If number is null, Number.Sqrt returns null. If it is a negative value, Number.NaN is returned (Not a number).


Find the square root of 625.

// Output: 25
Number.Sqrt( 625 )

Find the square root of 85.

// Output: 9.2195444572928871
Number.Sqrt( 85 )

Other functions related to Number.Sqrt are:

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Microsoft documentation: