๐ชตLogarithm Calculator
Find log base b of x for any positive base and value.
Free Logarithm Calculator
This logarithm calculator finds log_b(x) โ "log base b of x" โ for any positive base b โ 1 and positive value x, using the change-of-base formula: log_b(x) = ln(x) / ln(b). This works because most calculators and programming languages only provide natural log (ln) or common log (logโโ) directly.
Use base 10 for the common logarithm, or base e (โ2.71828) for the natural logarithm โ quick preset buttons are provided for both. Any other base, like logโ for binary problems, works the same way.
Free, instant, and runs entirely in your browser โ no sign-up required.