Log Calculator
Enter a positive number and a base to calculate logᵦ(x) using the change-of-base formula.
A QUICK WALKTHROUGH
How to use this tool
- Enter a finite positive number and a base.
- Use a base greater than 0 and different from 1.
- Calculate the logarithm locally in your browser.
Logarithm result
Uses logᵦ(x) = ln(x) / ln(b). The number must be positive; the base must be positive and not 1.
GOOD TO KNOW
Common questions
Base (b)
The base must be greater than 0 and different from 1.