Exponent Calculator

Raise any number to any power, including negatives and fractions. Calculate exponents and powers instantly. Supports positive, negative and fractional exponents with scientific notation for huge results. Free power calculator.

This tool runs 100% in your browser. Your input is never sent to any server — you can even go offline after the page loads.

About the Exponent Calculator

Exponentiation is repeated multiplication — until the exponents go negative or fractional, at which point most mental maths gives up. This calculator handles them all: whole-number powers, negative exponents (which yield fractions), fractional exponents (roots in disguise) and huge results reported in scientific notation. Whether you are doubling pennies for 30 days or computing decay factors, the answer appears the moment you type.

How to use the Exponent Calculator

  1. Enter the base number.
  2. Enter the exponent (power).
  3. Read the result instantly.
  4. Check the scientific notation for extreme values.

Key features

What does a negative exponent mean?
It means take the reciprocal: 2⁻³ equals 1 ÷ 2³ = 0.125. The negative sign flips the base, it does not make the result negative.
What is a fractional exponent?
It is a root: x^(1/2) is the square root of x, x^(1/3) the cube root, and x^(2/3) means square first, then take the cube root.

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