CALCULATORS
Compound Interest Calculator
Estimate how an initial amount may grow over time. Choose an annual interest rate, an investment term and how often interest compounds.
Enter the initial amount, interest rate and term to estimate growth.
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How to estimate compound interest
Enter an initial amount, a fixed annual rate from 0% to 100%, and a whole-number term from 1 to 100 years. Select annual, semiannual, quarterly, monthly or daily compounding. The result estimates the future value and interest earned; both use the same currency units as the initial amount.
Compound interest formula
The future value is calculated as A = P(1 + r/n)nt, where P is the initial amount, r is the annual rate as a decimal, n is the number of compounding periods per year, and t is the number of years.
Estimate only
This estimate assumes a fixed rate and does not include additional deposits, withdrawals, taxes, fees or inflation. Actual returns can differ and are not guaranteed.
Estimate monthly repayments with the Loan Calculator, or calculate simple interest with the Simple Interest Calculator, or compare percentages with the Percentage Calculator.