Logarithm Calculator
Natural, common and arbitrary-base logarithms with the change-of-base working and the logarithm properties.
Natural, common and arbitrary-base logarithms with the change-of-base working and the logarithm properties.
Your result will appear here
Computes the logarithm of a positive number in any base: natural (base e), common (base 10), binary (base 2) or a base you choose.
The working shows the change-of-base calculation, and the result is checked by raising the base back to the answer.
Example
log₁₀(100)
→ 2
A logarithm answers “to what power must the base be raised?”
Change of base.
Product, quotient and power properties.