Exponent & Logarithm Calculator
Compute powers, roots and logarithms in any base.
How to use the Exponent & Logarithm Calculator
Enter a base and a value to get bˣ, log base b of x, natural log, common log and roots.
Formula
log_b(x) = ln(x) ÷ ln(b)
Worked example
2¹⁰ = 1,024 and log₂(1,024) = 10.
Frequently asked questions
What is a logarithm?
The exponent you'd raise the base to in order to get the number: log₂(8) = 3 because 2³ = 8.
Results are estimates for educational and planning purposes. Always confirm important financial, health or legal decisions with a qualified professional. Last reviewed 2026-09-27.