⚡
Instant result
The result is updated directly from the data entered.
Online Calculator
Powers and roots
Calculate powers and nth roots in one tool.
Power
Result
256
Nth root
Result
4
Information
🔒
Local processing
The calculations are done in your browser and do not require sending data to a server.
💸
Free
No registration, subscription, or paid API required.
Frequently asked questions
Can I use decimal exponents?
Yes.
Can I calculate cube roots?
Yes, enter 3 as an index.
What happens with an even root of a negative number?
It has no real result and a warning is shown.
Can I use another index?
Yes. You can enter any integer index other than zero.