Exponent Calculator (Powers & Notation)
Raise any base to any power, see it in scientific notation, and read the working for negative and fractional exponents.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: A negative exponent means the reciprocal (2⁻³ = 1 ÷ 2³), and a fractional exponent is a root (9^0.5 = √9). A negative base with a fractional exponent has no real value, and 0⁰ is undefined — both are refused rather than guessed. The notation row is a real power of ten, so 2¹⁰ shows as 1.024 × 10³. Added 2026-11-13 17:54. Fixed 2026-11-13 18:04.
How to use it (step by step)
- 1Fill in the boxes: “Base”, “Exponent”. Example numbers are already there so you can see how it works; replace them with yours.
- 2The result updates instantly as you type (on a phone it is below the boxes).
- 3The bold line is the main answer. Tap Copy next to any value to copy it.
Words to know
- Fraction / ratio
- A fraction is a part of a whole (3/4 = three of four parts). A ratio compares two amounts (2:1 = twice as much).
- Scientific notation
- A short way to write very big or small numbers: 3,000,000 = 3 × 10⁶.
- Logarithm / root
- A root undoes a power (the square root of 9 is 3). A logarithm asks “what power gives this number?” (log₁₀ 100 = 2).
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