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Finance Calculators
Compound Interest Calculator
Calculate how an investment grows over time when interest compounds at regular intervals.
Future value
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Interest earned
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About the Compound Interest Calculator
Compound interest is interest earned not only on your original principal, but also on the interest that has already accumulated — causing your balance to grow faster the longer it's invested.
Formula: A = P(1 + r/n)nt, where P is principal, r is annual rate, n is compounding periods per year, and t is years.
More frequent compounding (daily vs. annually) produces slightly higher returns for the same nominal rate, because interest starts earning interest sooner.
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