How to use the exponent calculator
This exponent calculator, also called a power calculator, computes expressions of the form a raised to the power b. To get started, enter the base in the first field and the exponent in the second field. For example, type 2 as the base and 3 as the exponent to calculate 2³, which equals 8. When you click Get result, the calculator instantly shows the value of ab with up to ten decimal places of precision.
You can use any real numbers for both the base and exponent, including whole numbers, decimals, positive, and negative values. Positive exponents represent repeated multiplication, such as 5³ = 5 × 5 × 5. Negative exponents mean reciprocal powers: 2⁻³ = 1/(2³) = 1/8. Fractional exponents represent roots; for example, 41/2 is the square root of 4, and 81/3 is the cube root of 8. This makes the calculator useful for both simple powers and more advanced root calculations.
Exponents appear across algebra, science, engineering, and finance. They describe exponential growth and decay, compound interest, scientific notation, and the behaviour of many physical systems. Students use exponents when working with polynomials, functions, and logarithms. Engineers and scientists use them when modelling growth, waves, and energy. Financial analysts rely on exponents to understand compound interest and investment growth. Having a quick exponent calculator saves time and reduces mistakes in all of these contexts.
This page is designed to be fast and mobile-friendly, so you can compute powers from your phone, tablet, or desktop. The clear layout separates inputs from results, and the explanation below helps you interpret answers and recall exponent rules. Use this exponent calculator whenever you need to raise a number to a power, check a homework solution, or explore how changing the exponent affects the size of the result.