Power and Exponent Calculator
Enter a finite base and exponent to calculate base raised to exponent locally in your browser.
A QUICK WALKTHROUGH
How to use this tool
- Enter a base from −10¹⁰⁰ through 10¹⁰⁰.
- Enter an exponent from −1,000 through 1,000.
- Calculate and review the power or a precise real-domain error.
Real-number domain
The calculator accepts ordinary decimal and scientific notation. A negative base requires an integer exponent. Zero to a negative exponent and 0⁰ are rejected because they are undefined in this calculator’s real-number contract.
Floating-point result
Calculation uses the browser’s IEEE 754 Number arithmetic. Results show up to 15 significant digits; values that overflow, underflow to zero, or fall outside the supported finite range are reported instead of displayed as a misleading number.
Private local calculation
Inputs are validated and calculated in your browser. Nothing is uploaded or stored by this page.
GOOD TO KNOW
Common questions
Can the exponent be negative?
Yes, except when the base is zero. A negative exponent returns the reciprocal power.
Can I use a fractional exponent?
Yes for a non-negative base. A negative base with a non-integer exponent has no real result and is rejected.
Is 0⁰ calculated as 1?
No. Conventions differ by context, so this calculator reports 0⁰ as undefined.