Double Your Money Calculator
Figure out how long it will take your money to double at a given interest rate.Here's how it works:
Divide the interest rate into 72. Your answer is roughly the number of years needed for your investment to double. Like this:
72 = years
interest rate
For example, if you are earning 5% interest, you would divide 72 by 5. The time needed to double your investment is 14.4 years.