Compound Interest Calculator
See how your money grows with the power of compound interest.
Enter your investment details below.
$
$
7%
10 years
Enter Investment Details
Input your initial investment and monthly contributions
to see how your money grows over time.
Future Value
$0
Total Return: 0%
Total Invested
$0
Interest Earned
$0
Period
0 years
Rule of 72
To estimate how long it takes to double your money, divide 72 by your annual return rate. For example, at 7% return, your money doubles in about 10 years (72÷7≈10).