Compound Interest Calculator
See how your savings or investments grow over time with compound interest. Includes monthly contribution support.
Total Contributions $0
Total Interest Earned $0
Final Balance $0
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How Compound Interest Works
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. This creates a snowball effect where your money grows faster over time.
The formula is: A = P(1 + r/n)^(nt), where P is the principal, r is the annual rate, n is the compounding frequency, and t is the time in years. With monthly contributions, each deposit also earns compound interest from the date it's added.
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