⚡ Exponent Calculator
An exponent tells you how many times to multiply the base by itself: 2^10 means ten twos multiplied together. Negative exponents flip the result into a fraction, and fractional exponents give roots — 9^0.5 is just the square root of 9.
Enter the base and the exponent. Anything your browser can represent as a real number is fair game; combinations with no real answer (like a negative base to a fractional power) are flagged instead of faked.
How to use this calculator
Type the base and the exponent, then press Calculate to get the power instantly.
- Type the base number into the Base field.
- Type the exponent into the Exponent field; it can be positive, negative or fractional.
- Press Calculate and read the result as the headline answer.
- For a fractional exponent like 0.5, remember the result is a root: 9 to the power 0.5 equals 3.
Frequently asked questions
What does this exponent calculator compute?
It raises any base to any exponent: whole-number powers like 2 to the 10th, negative exponents like 2 to the -3, and fractional exponents like 9 to the 0.5, which equals the square root of 9.
What does a negative exponent mean?
A negative exponent flips the power into a fraction: 2 to the -3 equals 1 divided by 2 cubed, which is 1/8 or 0.125. The larger the negative exponent, the smaller the result.
What does a fractional exponent mean?
A fractional exponent is a root in disguise: an exponent of 1/2 means square root, 1/3 means cube root. So 27 to the power of one-third equals 3.
Why did I get a not-a-real-number error?
A negative base raised to a fractional exponent has no real answer, for example (-8) to the 0.5. The calculator flags this instead of returning a misleading value.