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POWER Function in Excel

Updated on December 31, 2023
Article byWallstreetmojo Team
Edited byAshish Kumar Srivastav
Reviewed byDheeraj Vaidya, CFA, FRM

In mathematics, we had exponents, the power to a given base number. In Excel, we have a similar built-in function known as the POWER function, which is used to calculate the power of a given number or base. To use this function, we can use the keyword =POWER( in a cell and provide two arguments, one as the number and another as power.

For example, suppose the base number 4 is raised to the power number 3. i.e., 4 cube. =4*4*4 = 64.

Power in Excel

A POWER in Excel is a Math/Trigonometric function that computes and returns the result of a number raised to a power. The POWER Excel function takes two arguments: the base (any real number) and the exponent (power that signifies how many times the given number will be multiplied by itself). For example, 5 multiplied by a power of 2 is the same as 5 x5.

The Formula of POWER Function
Power Function Fornula

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Explanation of POWER Function in Excel

The POWER function in Excel takes both arguments as a numeric value. Hence, the arguments passed are of integer type where the number is the base number, and the POWER is the exponent. Both arguments are required and are not optional.

POWER Function Excel
Power Excel Function
Power excel

We can use the POWER function in Excel in many ways, like for mathematical operations. For example, we can use the POWER function equation to compute the relational algebraic functions.

How to Use POWER Function in Excel

The Excel POWER function is very simple and easy to use. Let us understand the working of POWER in Excel by some examples.

You can download this POWER Function Excel Template here – POWER Function Excel Template

POWER in Excel Example #1

We have a POWER function equation y=x^n (x to the power n), where y is dependent on the value of x, and n is the exponent. We also want to draw the graph of this f(x, y) function for given values of x and n=2. For example, the values of x are:

Power

So, in this case, since the value of y depends upon the nth power of x, we will calculate the value of Y using the POWER function in Excel.

  • 1st value of y will be 2^2 (=POWER(2,2)
  • 2nd value of y will be 4^2 (=POWER(4,2)
  • ……………………………………………………………
  • ……………………………………………………………
  • 10th value of y will be 10^2 (=POWER(10,2)
Power Graph

Now, selecting the values of x and y from range B4:K5, choose the graph (in this example, we have chosen the scatter graph with smooth lines) from the “Insert” tab.

POWER Excel Function1

So, we get a linear, exponential graph for the given POWER function equation.

Power function graph

POWER in Excel Example #2

In algebra, we have the quadratic POWER function equation, represented as ax2+bx+c=0, where x is unknown, and a, b and c are the coefficients. The solution of this POWER function equation gives the roots of the equation, which are the values of x.

The roots of the quadratic POWER function equation are computed by following mathematical formula:

  • x = (-b+ (b2-4ac)1/2)/2a
  • x = (-b- (b2-4ac)1/2)/2a

b2-4ac is called discriminant and describes a quadratic POWER function equation’s number of roots.

Now, we have a list of quadratic POWER function equations given in column A. But, first, we need to find the roots of the equations.

POWER Function (Quadratic Equations)

^ is the exponential operator used to represent the power (exponent). For example, X2 is the same as x^2.

We have five quadratic POWER function equations, and we will solve them using the formula with the help of the POWER function in Excel to find the roots.

In the first POWER function equation, a=4, b=56, and c = -96. If we mathematically solve them using the above formula, we have the roots -15.5 and 1.5.

POWER Function (Quadratic Equations) Examaple 1

To implement this in Excel formula, we will use the POWER function in Excel and the formula will be:

  • =((-56+POWER(POWER(56,2)-(4*4*(-93)),1/2)))/(2*4) will give the first root and
  • =((-56-POWER(POWER(56,2)-(4*4*(-93)),1/2)))/(2*4) will give the second root of the equation

So, the complete formula will be,

=”Roots of equations are”&” “&((-56+POWER(POWER(56,2)-(4*4*(-93)),1/2)))/(2*4)&” , “&((-56-POWER(POWER(56,2)-(4*4*(-93)),1/2)))/(2*4)

The formulas are concatenated with the string “Roots of equation are.”

Using the same formula for other POWER function equations, we have:

POWER Function (Quadratic Equations) Example 2

Output:

POWER Function (Quadratic Equations) Example 3

POWER in Excel Example #3

So, we can use the POWER function in Excel for different mathematical calculations.

Suppose we have to find out the compound interestCompound InterestCompound interest is the interest charged on the sum of the principal amount and the total interest amassed on it so far. It plays a crucial role in generating higher rewards from an investment.read more for which the formula is:

Amount = Principal (1 + r/n)nt

  • Where r is the interest rate, n is the number of times interest is compounded per year, and t is the time.
  • If an amount of $4,000 is deposited into an account (saving) at an interest rate of 5% annually, compounded monthly, the value of the investment after 5 years can be calculated using the above compound interest formula.
  • When, Principal = $4000, rate = 5/100 that is 0.05, n =12 (compounded monthly), time =5 years.

We have the formula using the compound interest formula and implementing it into the Excel formula using the POWER function.

=B2*(POWER((1+(B3/B5)),(B4*B5)))

POWER Function (Quadratic Equations) Example 4

So, the investment balance after 5 years is $5.133.43.

POWER in Excel Example #4

According to Newton’s gravitation law, two bodies at a distance of r from their center of gravity attract each other in the universe according to a gravitational POWER Excel formula.

F = (G*M*m)/r2

When F is the magnitude of the gravitational force, G is called the gravitational constant, M is the mass of the first body, m is the mass of the second body, and r is the distance between the bodies from their center of gravity.

Let us calculate the magnitude of gravitational force by which the sun pulls the earth.

  • The mass of the sun is 1.98*10^30 kg.
  • The mass of the earth is 5.97*10^24 kg.
  • The distance between the sun and the earth is 1.496 x 10^11 meters.
  • Gravitational constant value is 6.67*10^-11 m3kg-1s-2.

In Excel, if we want to calculate the gravitational force, we will again be using the POWER in Excel that can operate over big numeric values.

  • So, we can convert the scientific notation values into the POWER Excel formula using the POWER in Excel.
  • 1.98*10^30 will be represented as 1.98*Power(10,30), similarly to other values.
  • So, the POWER Excel formula to calculate the force will be: = (6.67*POWER(10,-11)*1.98*POWER(10,30)*5.97*POWER(10,24))/POWER(1.496*POWER(10,11),2)
POWER Function (Quadratic Equations) Example 5

Since the value obtained as force is a big number Excel expressed it scientific notationExcel Expressed It Scientific NotationIn Excel, scientific notation is a specific style of writing numbers in scientific and exponential forms. Scientific notation compactly helps display values, allowing us to compare and use the same in calculations.read more. To change it into a fraction, change the format to the fraction.

POWER Function (Quadratic Equations) Example 5-1

Output:

POWER Function (Quadratic Equations) Example 5-2

So, the sun pulls the earth with a force of magnitude 35229150283107900000000 Newton.

Recommended Articles

This article is a guide to the POWER Function in Excel. Here, we discuss the POWER formula in Excel and how to use the POWER Excel function, along with Excel examples and downloadable Excel templates. You may also look at these useful functions in Excel: –

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