Quantora · Free calculator
Compound Interest Calculator
See how money grows with compound interest - enter a starting amount, rate, time and optional recurring contributions to get the future value and interest earned.
Calculator
How it works
Compound interest is interest earning interest. Each period your balance grows by the rate, and that growth itself earns more next period. Adding regular contributions accelerates it further. Over long horizons the effect is dramatic - the core engine of long-term investing.
FV = P(1 + r/n)^(n.t) + contributions compounded each period
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