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

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The base b logarithm of a number is the exponent that we need to raise the base in order to get the number. The logarithm of the multiplication of x and y is the sum of logarithm of x and logarithm of y. …

In its simplest form, a logarithm answers the question: How many of one number multiply together to make another number? Example: How many 2 s multiply together to make 8? Answer: 2 × 2 × 2 = 8, …

To calculate the logarithm of a number x with base b, enter your values below. Did we solve your problem today? We make it count! The log calculator (logarithm) calculates the value of a logarithm …

Free logarithm calculator - step-by-step solutions to help simplify logarithmic expressions.

Learn the eight (8) log rules or laws to help you evaluate, expand, condense, and solve logarithmic equations. Try out the log rules practice problems for an even better understanding.

Feb 16, 2026 · Logarithms of the latter sort (that is, logarithms with base 10) are called common, or Briggsian, logarithms and are written simply log n. Invented in the 17th century to speed up …

The log calculator is designed to compute the logarithm of a number to any base. It can add, subtract, multiply, and divide two log values.

Aug 1, 2025 · This calculator will solve the basic log equation log b x = y for any one of the variables as long as you enter the other two. The logarithmic equation is solved using the logarithmic function: