In mathematics, the logarithm of a number is the exponent by which another fixed value, the base, must be raised to produce that number. For example, the logarithm of 1000 to base 10 is 3, because 1000 …

Logarithm rules and properties Logarithm Rules The base b logarithm of a number is the exponent that we need to raise the base in order to get the number. Logarithm definition Logarithm rules Logarithm …

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

May 10, 2026 · Logarithm, the exponent or power to which a base must be raised to yield a given number.

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

Learn what logarithms are and how to evaluate them.

Logarithm is another way of writing exponent. The problems that cannot be solved using only exponents can be solved using logs. Learn more about logarithms and rules to work on them in detail.

log 100 = 2 because 102 = 100 This is an example of a base-ten logarithm. We call it a base ten logarithm because ten is the number that is raised to a power. The base unit is the number being …

Logarithm A logarithm is the inverse function of exponentiation. A logarithm tells us the power, y, that a base, b, needs to be raised to in order to equal x. This is written as: log b (x) = y