Compound interest
Compound interest grows your capital by reinvesting interest. Over time, compounding makes a big difference. This calculator projects the future value of an investment based on amount, rate, and time.
20 years
Results
Future value$300,850.72
Interest earned$170,850.72
Visualisation
Details
Total contributions$130,000.00
Future value = initial principal × (1 + rate/12)^months + monthly contributions × [((1 + rate/12)^months − 1) / (rate/12)]. Interest earned = future value − total contributions (initial + monthly). Annual rate compounded monthly.