Compound Interest Calculator

See how your money grows with the power of compound interest

Enter Your Details

Initial Investment ($)

Monthly Contribution ($)

Annual Interest Rate (%)

Investment Period (Years)

Compound Frequency

Future Value

Total Contributions

Total Interest

Interest Percentage of Total

The Formula

A = P(1 + r/n)^(nt) where P is principal, r is rate, n is frequency, and t is time.

Why It Matters

Compound interest earns interest on interest, causing your wealth to grow exponentially over time.

Pro Tip

Start early! Time is the most powerful factor in compound growth. Even small amounts add up.