Calculate compound interest online for any principal, rate, and time period. See how your money grows with daily, monthly, or yearly compounding.
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Enter your initial investment amount.
Enter annual interest rate and time period.
Select compounding frequency and calculate.
Daily, monthly, quarterly, or annual compounding.
Chart showing money growth over time.
See the exact formula used for calculation.
Compare simple and compound interest.
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods.
A = P(1 + r/n)^(nt), where P is principal, r is annual rate, n is compounds per year, and t is years.
More frequent compounding yields more returns. Daily compounding gives slightly more than annual compounding.
Yes, compound interest grows faster because interest earns interest, especially over long periods.
Yes, you can enter decimal values for time (e.g., 1.5 years).
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Principal
$100,000
Total Interest
$46,933
Total Amount
$146,933
Principal vs Interest