Scientific quantities are often expressed as logarithms of other quantities, using a logarithmic scale. For example, the decibel is a unit of measurement associated with logarithmic-scale quantities.

In its simplest form, a logarithm answers the question: How many of one number multiply together to make another number?

May 10, 2026 · In general, finer intervals are required for calculating logarithmic functions of smaller numbers—for example, in the calculation of the functions log sin x and log tan x.

Learn about the properties of logarithms that help us rewrite logarithmic expressions, and about the change of base rule that allows us to evaluate any logarithm we want using the calculator.

Apr 21, 2026 · A logarithmic function is the inverse of an exponential function and is defined for positive real numbers with a positive base (not equal to 1). The logarithmic function to the base b is …

As can be seen from the graph, a logarithmic function cannot have a negative x-value, and has a zero at x = 1 because any value raised to the 0 th power is equal to 1 (log b (1) = 0).

May 28, 2024 · What is a logarithm and how it works with examples. How to solve logarithmic equations is explained with the formula. Also, learn natural and common logarithms.

Applications \ [ \] Richter Scale: Richter scale was developed by Charles Richter in 1935 to compare the intensities of earthquakes. The amount of energy released in an earthquake is very large, so a …

A logarithmic function involves logarithms. Its basic form is f (x) = log x or ln x. Learn about the conversion of an exponential function to a logarithmic function, know about natural and common …

This free log calculator solves for the unknown portions of a logarithmic expression using base e, 2, 10, or any other desired base.