Enter a number and a base into the calculator. The calculator will display the inverse log of the number and base entered. The base of the natural log is equal to e=2.71828. The standard base for log is base 10.

## Inverse Log Formula

The following formula is used to calculate the inverse log of a number and base.

*x* = log_{b}^{-1}(*y*) = *b ^{ y}*

- Where x is the value you are calculating
- b is the base
- and y is the number to take the log of

## Inverse Log Definition

An inverse log is defined as the anti-log of a log function raised to a negative value.

## Inverse Log Example

How to calculate the inverse log

**First, determine the base**Logarithmic functions all require a base number. This is typically represented as b in the equation above. The natural log (ln) as a base of e = 2.718…

**Next, determine the value y**Determine the number you wish to take the inverse log of.

**Calculate the inverse log**Calculate the inverse log of y using the formula above.

## FAQ

**What is an inverse log?**

An inverse log is another way of saying the anti log. It’s a value representing the inverse of a logarithmic function and can be calculated using the equation x = b^y where b is the base.

**What is a natural log?**

The natural log is a logarithmic function with the base of e = 2.718.