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Compound Interest Calculator

Investing

Calculate compound interest with your choice of compounding frequency.

Changing the display currency only changes the symbol shown — amounts aren't converted, since this tool doesn't use live exchange rates.

Future value

$0

Total interest earned: $0

How this is calculated

A(t) = P(1 + r/n)^(nt), where P is principal, r is the annual rate, n is the number of times interest compounds per year, and t is time in years.

Frequently asked questions

Does compounding frequency make a big difference?
It matters more at higher rates and longer time horizons, but the difference between monthly and daily compounding is usually small — the interest rate itself matters far more.