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.

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## 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.

To calculate doubling time, take the log base 10 of 2, and divide it by the log base 10 of 1 plus the increase rate per period.

## Doubling Time Definition

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