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How to use the POWER() Function in Excel

Its returns the result of raising a base number to a specified exponent.

Syntax

POWER(number; power)

Arguments

Parameter Requirement Valid Input
number Required Any real number (base)
power Required Real number (exponent)

Key Properties

  1. Mathematical Operation:

    • Special Cases:
      • a0=1 (any non-zero aa)
      • 0b=0 (for b>0b>0)
      • a1=a
  1. Error Handling:
    • #NUM! if a<0a<0 and bb is non-integer (e.g., (−2)1.5(−2)1.5).
  2. Alternate Syntax:
    Use the caret operator (^):

=5^2  // Equivalent to =POWER(5,2)

Examples

  1. Basic Calculations:

=POWER(3, 2) → Returns 9 

=POWER(3.2, 3) → Returns 32.768 

=POWER(7, 1.33) → Returns ≈13.3039 

  1. Computer Science (Binary Units):

=POWER(2, 10) → Returns 1024 (1 kilobyte) 

  1. Physics (Inverse Square Law):

=POWER(distance, -2) → Calculates intensity decay. 

Related Functions

  • SQRT(): Square root (=POWER(x,0.5)).
  • EXP(): Natural exponentiation (exex).
  • LOG(): Inverse of power functions.
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