Excel SQRT Function
The SQRT function returns the square root of a number that is not negative.
Syntax
=SQRT(number)
Arguments
- number (required): The number to return the square root for.
Return Value
The SQRT function returns a non-negative number.
Function Notes
- SQRT will return the #NUM! error if number is negative. To avoid the #NUM!, you can take the advantage of the ABS function to get the absolute value of numbers like this: =SQRT(ABS(number)).
- SQRT will return the #VALUE! error if number is not numeric.
Example
Supposing you have a table with numbers as shown below, to get the square root of the first number, please copy or enter the formula below in cell C4, and press Enter to get the result:
=SQRT(121)
√ Note: In the formula above, we used the actual values. However, in the case that you want to get the square roots of all numbers in the table as shown below, cell references are better choices than the actual values. Since you can just drag the fill handle down to apply the formula to the below cells after entering the formula with cell references in the top cell. The formula with a cell reference is as followed:
=SQRT(B4)
Related functions
The POWER function returns the result of a number raised to a given power.
The SUMSQ function returns the sum of squares of supplied values.
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