How do I use Compound Interest Calculator?

Enter your initial investment amount. Set the interest rate and time period. Click Calculate to see your projected growth.

Is Compound Interest Calculator free and safe to use?

Compound Interest Calculator is free and runs directly in your browser, so you can use it instantly without installing software.

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Compound Interest Calculator

Calculate compound interest and visualize your investment growth over time. See how your money compounds monthly, quarterly, or annually.

Initial Principal

Annual Interest Rate (%)

Investment Period (Years)

Compound Frequency

Final Balance

$106,639

Total Interest Earned

$36,639

Principal Amount

$70,000

Growth Projection

What is Compound Interest?

Compound interest is the interest calculated on the initial principal plus all accumulated interest from previous periods. Unlike simple interest, which only earns interest on the principal, compound interest allows your money to grow exponentially over time.

The formula for compound interest is A = P(1 + r/n)^(nt), where A is the final amount, P is the principal, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the time in years. This calculator helps you visualize the power of compounding.