256
Exponent Calculator
Use this free exponent calculator to raise a base to a power and see the result, scientific notation, zero exponent rules, negative exponent steps, fractional exponent notes, examples, copy, and history.
Positive powers Negative exponents Fraction exponents Scientific notation
2^8256
- Scientific notation
- 2.56e+2
- Base
- 2
- Exponent
- 8
Steps
- 2^8 means multiply 2 by itself 8 times.
- 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
- The answer is 256.
How to use the exponent calculator
- Enter the base number.
- Enter the exponent as a whole number, decimal, or simple fraction such as 1/2.
- Press Calculate exponent to see the power, scientific notation, and steps.
- Use examples, recent answers, or copy the answer while you compare powers.
Common uses
Calculate squares, cubes, powers of 10, and larger powers.
Check zero exponent and negative exponent homework problems.
Use simple fraction exponents such as 1/2 for square-root style calculations.
Copy exponent answers and compare recent calculations while studying.
Examples
0.008
9
Frequently asked questions
Quick answers about powers, negative exponents, zero exponents, fraction exponents, and privacy.
What does an exponent mean?
An exponent tells how many times to use the base as a factor. For example, 2^4 means 2 x 2 x 2 x 2, which equals 16.
Can this calculator handle negative exponents?
Yes. A negative exponent is shown as a reciprocal. For example, 5^-3 means 1 / 5^3, which equals 0.008.
What happens when the exponent is zero?
Any nonzero base raised to the power of 0 equals 1. The calculator will show this rule in the steps.
Can I use fraction exponents?
Yes. You can enter simple fraction exponents such as 1/2 or 3/2. Fractional exponents can represent roots and powers.
Why are some negative-base powers not supported?
Negative bases with non-whole-number exponents can lead to complex numbers. This calculator focuses on real-number results, so negative bases need whole-number exponents.
Does the calculator show scientific notation?
Yes. The result card shows the normal result and a scientific-notation version, which is useful for very large or very small powers.
Is my exponent history private?
Yes. Recent exponent calculations stay only in the current browser tab while you use the page. They are not sent to a server.