Exponent Calculator — Calculate Powers of Numbers
Use this free exponent calculator to raise any base number to any power including negative exponents and fractional exponents. Get an instant result with a full powers table showing your base number at every exponent.
Exponent Calculator
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How to Use the Exponent Calculator
Enter your base number and exponent then click Calculate. The display updates live as you type showing the expression before you calculate. Results include the answer, scientific notation and a full powers table for your base.
What Are Exponents?
An exponent tells you how many times to multiply a number by itself. Written as base^exponent — for example 2³ means 2 × 2 × 2 = 8. The base is the number being multiplied and the exponent is how many times to multiply it.
Special Exponent Rules
Any number to the power of 0 = 1 — for example 5⁰ = 1
Any number to the power of 1 = itself — for example 7¹ = 7
Negative exponents = reciprocal — for example 2⁻³ = 1/2³ = 1/8
Fractional exponents = roots — for example 4^0.5 = √4 = 2
FAQs
What is an exponent?
An exponent is the small raised number that tells you how many times to multiply the base by itself. In 2³ the base is 2 and the exponent is 3 meaning 2 × 2 × 2 = 8.
What does a negative exponent mean?
A negative exponent means the reciprocal of the positive version. For example 2⁻³ = 1/2³ = 1/8 = 0.125.
What is anything to the power of zero?
Any number raised to the power of 0 equals 1. For example 99⁰ = 1.
What is a square and a cube?
Squaring a number is raising it to the power of 2. Cubing is raising it to the power of 3. So 5² = 25 and 5³ = 125.
Is this calculator free?
Yes completely free with no sign-up needed.