Skip to Content loading...
couple_adobestock_202310

Rule of 72 Calculator by Interest Rate

How It Works

The Rule of 72 predicts how long an investment will take to double based on a fixed annual interest rate. The rule is this: 72 divided by the interest rate number equals the number of years for the investment to double in size.

For example, if the interest rate is 12%, you would divide 72 by 12 to get 6. This means that the investment will take about 6 years to double with a 12% fixed annual interest rate. 

Enter a fixed annual interest rate into the calculator to see how long it will take for the investment to double in size.

default icon for intro
What can we help you with? *
default icon for borrow
What are you borrowing for?
default icon for vehicleOptions
Vehicle Options
default icon for homeOptions
Home Options
default icon for save
What are you saving for?
default icon for forMyKidsOptions
How old are your kids?
default icon for everydayBanking
Which of these banking options are you interested in?
default icon for checkingOptions
How old are you (or your child)?
default icon for purchasingPowerOptions
How old are you?
default icon for checking15Options
What kind of account are you looking for?