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nth root of number

Excel formula: nth root of number
Generic formula 

To get the nth root of a number, you can use the caret(^) operator with 1/n as the exponent in a simple formula, or you can use the POWER function. In the example shown, the formula in D5 is:


By definition, the nth root of a number can be calculated by raising that number to the power of 1/n. Exponents are entered using the exponentiation operator (^), with a number on the left and power on the right. So, in this example we get the numbers from column B and powers from column C:


With the POWER function

The POWER function is another way to perform exponentiation in Excel. To get the nth root of a number with POWER, use the number with 1/n for the power argument:


So for the example shown, the formula in D5 would be:



Dave Bruns

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