Doubling Time Calculator

Use this calculator to calculate the doubling growth rate of a value if it increases at a constant rate. This is helpful in analyzing the exponential growth of a value within a certain time.

How to Calculate Doubling Time?

There are many methods of determining the doubling time of a value, investment, or any other growth quantity:

Method 01 - By Using Actual Formula

You can use the following formula to calculate the rate at which a quantity doubles its original value:

Doubling Time = log (2)/log (1 + Increase)

Where

Increase = [(Growth In Value)/(Original Value)] * 100%

Example (Doubling Time):

If a bank account is earning 5% interest per year, the doubling time would be:

Doubling Time = log (2)/log (1 + Increase)

Doubling Time = ln(2) / ln(1 + 0.05) = 14.2 years

Method 02 - The Rule of 72:

While the above doubling tie formula gives precise results, it is yet difficult to deal with when you have large values. This is where the rule of 72 can be helpful for you. While it does not give a more precise answer than the actual formula, it is still useful to gauge double-time approximations at a constant rate.

The formula of the rule of 72 is given as:

Doubling Rate * Period = 72

Doubling Rate = (72)/(Period)

Method 03 - By Using Doubling Time Calculator

Our calculator is the fastest and most accurate way of estimating doubling time. To use the tool, you need to follow the guide as under:

1. Select the quantity to be measured
2. Enter the required value
3. Click ‘Calculate’

Applications of Doubling Time Calculator:

The calculator provides an estimation of the exponential increase, and it has the following applications in the practical field:

Finance and Investments:

• Figure out the length of time it takes for an investment to double with time
• Calculate how fast a loan repayment doubles if not paid on time

Population Growth and Demographics:

• You can perform future predictions for the increase in the size of the population
• Estimate the amount of increase for different resources including water, food, and residential units in a locality, etc.

Biology and Medicine:

• By using the doubling calculator, you can estimate the exponential increase in the size of bacteria. It helps to understand the infections and antibiotic resistance.

Economics and Business:

• Assess the rate at which a country's economy is expanding.
• Evaluate the growth potential of a company or industry.

Limitations:

• The double time calculator provides a doubling rate of a value based on the user’s input. Results are not guaranteed if the entered values deviate over time.
• The results are not held precise enough if compounding frequency is not considered.