Rule of 72 Calculator

Rule of 72 Calculator

years

Rule of 72 Calculator Results
Number of Years to Double Investment Chart

How the Rule of 72 Calculator can help you

Rule of 72 Calculator will help you estimate the number of years needed to double your money at a given interest rate.

* Rule of 72 Calculator also will help you estimate the annual interest rate needed to double an investment in a specified number of years.

How to use the Rule of 72 Calculator

1. Select the interest rate or the number of years first;

2. Click on the “Calculate” button to get the results for “Rule of 72 Estimate” and “Exact Answer”.

Rule of 72 Calculator Formula

R x T = 72

T = Number of Periods;

R = Interest Rate as a percentage;