Investment Details
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Growth over time
See exactly how your money grows over time — and why compounding is the most powerful force in investing
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Compound interest is interest calculated on both your initial principal and the interest already accumulated. This means your money grows exponentially over time rather than linearly. Albert Einstein reportedly called it the "eighth wonder of the world."
The formula is: A = P(1 + r/n)^(nt) where P is principal, r is annual rate, n is compounds per year, and t is time in years.
The more frequently interest compounds, the faster your money grows. Daily compounding yields slightly more than monthly, which yields more than annual. Over long periods, even small differences in frequency add up to significant amounts.
The S&P 500 has historically returned about 10% annually before inflation, or about 7% adjusted for inflation. A diversified portfolio typically aims for 6–8% annually. Savings accounts and CDs currently yield 4–5% in high-rate environments.
Guides to help your money grow faster through the power of compounding
Helping you understand the power of compound growth
CompoundCalcQuick is a free compound interest calculator designed to help investors, savers, and anyone curious about growing their money understand exactly how their investments will grow over time.
We believe financial education should be free and accessible to everyone. Our calculator shows not just the final number, but the full story of how compounding works year by year.
All calculations are estimates for educational purposes only. Past investment returns do not guarantee future results. Please consult a licensed financial advisor before making investment decisions.
Last updated: January 1, 2025
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Last updated: January 1, 2025
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