Enter the total % increase per period into the calculator. The calculator will evaluate and display the total periods (time) it takes for that value to double.

## Doubling Time Formula

The following formula is used to calculate the number of periods it takes to double given the percent increase of a value per period.

dt = log(2) / log(1 + i)

- Where dt is the doubling time
- i is the increase per period.

## Doubling Time Definition

Doubling time is a term used to describe the number of periods or total time it takes a value, usually a financial value, to double it’s value.

## Doubling Time Example

How to calculate doubling time?

**First, determine the total increase per period.**Measure the total increase per period from 0.

**Next, calculate the doubling time.**Using the formula above, calculate the doubling time.

## FAQ

**What is doubling time?**

Doubling time is the number of periods it takes a given value to double given a constant rate of increase.