Rule of 72 Calculator
The Rule of 72 is a simple way to estimate how long an investment takes to double given a fixed annual rate of return. Divide 72 by the annual rate to get the approximate number of years.
Rule of 72 Calculator — How Fast Does Your Money Double?
Use the Rule of 72 to estimate how long it takes for your investment to double. Enter the annual rate of return and see the power of compounding.
Years to Double9.00
Estimated Value at Double$20,000.00
Annual Rate8%