Compound Interest Calculator
Estimate future savings or investment growth when interest is added to the balance and earns further interest. It can make a financial figure easier to understand before you compare options or enter the numbers into a larger budget.
How to use this calculator
Enter the starting amount and the rate or time values requested. Check whether the rate is annual and whether compounding or contributions are included before comparing the result with another estimate.
Formula
A = P(1 + r/n)^(nt).
A useful way to check it
Do not round the input too early. Keeping a few extra decimal places can make the final result more accurate. Financial results can change with rates, fees, taxes, dates, and the assumptions entered. Treat the figure as an estimate and verify important numbers against the terms that actually apply.