Logarithm (any base)
Calculate Logarithm (any base) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Logarithm (any base)
Argument x
Base
log_b(x)
2
More about: Logarithm (any base)
What it calculates
The “Logarithm (any base)” calculator computes log_b(x) from 2 parameters: argument x, base.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Argument x = 100, Base = 10 the result is 2 (log_b(x) = ln x / ln b).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.