Compound Interest Calculator
See how your money grows over time with the power of compound interest and regular contributions.
Future Value
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Total Contributions
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Total Interest Earned
$0
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Frequently Asked Questions
What is compound interest? ▼
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. This "interest on interest" effect makes your money grow exponentially over time.
How does compounding frequency affect returns? ▼
More frequent compounding produces slightly higher returns because interest is calculated and added to the principal more often. Daily compounding earns slightly more than monthly, which earns more than annually. However, the difference is usually small.
What is a realistic rate of return? ▼
The S&P 500 has historically averaged about 10% annually before inflation (7% after inflation). Savings accounts offer 0.5-5%. Bonds typically return 2-6%. Crypto is highly variable. Choose a rate that matches your investment strategy.