Free Online Calculator

Exponent Calculator

Raise numbers to any power and see the exponent rules at work.

Last updated: Free, no sign-up Private — runs in your browser

Quick answer: what is an exponent?

aⁿ means a multiplied by itself n times. 2¹⁰ = 1024.

Overview of the Exponent Calculator

An exponent tells you how many times to multiply a number by itself. This calculator raises any base to a whole, negative or fractional exponent, shows the exact integer value when it exists (up to thousands of digits), the scientific notation and the reciprocal, and has a second tool that demonstrates the product, quotient and power rules with your own numbers.

Negative exponents give reciprocals (2⁻³ = 1/8) and fractional exponents give roots (9^½ = 3). See the Root Calculator, Log Calculator, Scientific Notation Converter and Big Number Calculator.

How We Calculate

The calculator applies the standard method step by step.

  1. Positive whole exponent: multiply the base by itself n times.
  2. Negative exponent: a⁻ⁿ = 1 ÷ aⁿ.
  3. Fractional exponent: a^(1/n) is the nth root of a; a^(m/n) = (ⁿ√a)ᵐ.
  4. Zero exponent: a⁰ = 1 for any a ≠ 0.
  5. Exact integer powers use big-integer arithmetic so no digits are lost.
aᵐ × aⁿ = aᵐ⁺ⁿ   aᵐ ÷ aⁿ = aᵐ⁻ⁿ   (aᵐ)ⁿ = aᵐⁿ   a⁻ⁿ = 1/aⁿ
Worked example — exponent calculator
ItemValue
Result1024
Scientific notation1.024 × 10^3
Reciprocal (a⁻ⁿ)0.0009765625
Natural log of the result6.9314718056
Number of digits4
Powers of different bases
PowerResult
2^532
2^101024
5^3125
9^0.53
2^-30.125
Powers of 2 and 10
n2ⁿ10ⁿ
011
1210
24100
381,000
41610,000
532100,000
6641,000,000
712810,000,000
8256100,000,000
95121,000,000,000
101,02410,000,000,000
112,048100,000,000,000
124,0961,000,000,000,000
138,19210,000,000,000,000
1416,384100,000,000,000,000
1532,7681,000,000,000,000,000
1665,53610,000,000,000,000,000

Exponent Calculator — Frequently Asked Questions

What is an exponent?

A small number written above a base showing how many times to multiply the base by itself: 2³ = 2 × 2 × 2 = 8.

What is a negative exponent?

It means a reciprocal: 2⁻³ = 1 ÷ 2³ = 1/8 = 0.125.

What is a fractional exponent?

A root: 9^(1/2) = √9 = 3 and 8^(2/3) = (∛8)² = 4.

Why is any number to the power 0 equal to 1?

Because aⁿ ÷ aⁿ = a⁰ and anything divided by itself is 1 (the case 0⁰ is undefined or conventionally 1).

What are the laws of exponents?

Product: aᵐ·aⁿ = aᵐ⁺ⁿ. Quotient: aᵐ/aⁿ = aᵐ⁻ⁿ. Power of a power: (aᵐ)ⁿ = aᵐⁿ.

Why can't a negative base have a fractional exponent?

The result would be a complex number, not a real one — try the Root Calculator, which shows complex roots.

How is the exponent calculator calculated?

It uses the standard method: aᵐ × aⁿ = aᵐ⁺ⁿ   aᵐ ÷ aⁿ = aᵐ⁻ⁿ   (aᵐ)ⁿ = aᵐⁿ   a⁻ⁿ = 1/aⁿ The full working and a worked example are shown on this page.

How accurate is this calculator?

Decimal results use standard double-precision arithmetic (about 15–16 significant digits). Tools that work with whole numbers — big numbers, factors, bases, combinations — use exact integer arithmetic, so no digits are lost.

Can I use it for homework or exams?

Yes for checking your work and learning the method. The steps and formula are shown so you can understand the answer, but follow your teacher's rules about calculators in exams.

Is my data stored?

No. Everything is calculated in your browser and nothing you enter is uploaded or saved.

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