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Cube root of number

Excel formula: Cube root of number
Generic formula 
=number^(1/3)
Summary 

To get the cube root of a number, you can use the caret(^) operator with 1/3 as the exponent in a simple formula. In the example shown, the formula in C5 is:

=B5^(1/3)
Explanation 

The cube root of a number can be calculated manually with the exponentiation operator (^) or with the POWER function.

Manually with ^

The cube root of a number can be calculated manually by raising a number to the (1/3) using the exponentiation operator (^). In the example shown, the formula in C5 is:

=B5^(1/3)

Be sure to enclose 1/3 in  parentheses to control the order of operations.

With the POWER function

The cube root of a number can also be calculated with the POWER function, by supplying 1/3 as the power argument. The equivalent formula is:

=POWER(B5,1/3)
Author 
Dave Bruns
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Excel formula: Square root of number
Square root of number
The SQRT function is fully automatic and will return the square root of any positive number. If for some reason you need to get the square root of a negative number (i.e. treat the negative number like a positive number) you can wrap the number in...
Excel formula: nth root of number
nth root of number
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...
Related functions 
Excel POWER function
Excel POWER Function

The Excel POWER function returns a number to a given power. The POWER function works like an exponent in a standard math equation.

Good links 
Rational exponents and radicals (Kahn Academy)

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