**Log**

Specify the number for which the log will be calculated for a given base.

**Base**

### Choose the base for the log calculation. You can choose between exponential, 2, 10, or any other base as required.

**Basic Log Rules**

The basic logarithm rules for addition, subtraction, multiplication, and division are:

logb(x*y) = logb(x) + logb(y)

logb(x/y) = logb(x) – logb(y)

logb(xy) = y*logb(x)

logb(x) = logk(x)/logk(b)