Exponent Calculator

Raising a number to a power — multiplying it by itself a given number of times — is one of the most common operations in maths, science and finance, and this calculator does it instantly.

Enter a base and an exponent and you get the result the moment you type, along with the full expression written out so it is easy to read, check and copy.

It handles far more than simple whole-number powers: a negative exponent gives a reciprocal (2 to the power of -2 is 0.25), a fractional exponent computes a root (9 to the power of 0.5 is 3), and a negative base with a whole exponent works correctly (-2 cubed is -8).

The calculator also handles the tricky edge cases cleanly rather than showing a confusing NaN or Infinity.

Zero to the power of zero is treated as 1, following the standard combinatorial convention.

Zero raised to a negative power is flagged as undefined because it implies dividing by zero, and a negative base with a fractional exponent is reported as having no real result, since those roots are complex numbers.

If a result grows past the largest value a browser can represent, you get a clear overflow message instead of a silent Infinity.

Everything is computed locally in your browser using standard double-precision arithmetic, so nothing is uploaded and the tool works offline.

It is handy for homework, quick engineering checks, compound-growth estimates and anywhere you need a fast, trustworthy power.