Compound Interest Calculator - Visualization & Growth Tool
Calculate your investment growth over time with compound interest. Compare monthly, quarterly, and annual compounding to maximize your wealth and retirement savings.
Small, consistent contributions can lead to massive growth over time due to the mathematical nature of compounding. Start early!
Enter your initial investment, monthly contribution, and expected interest rate to see how your money compounds over time.
Fill in your investment details to project your future wealth.
Compound Interest Calculator - Visualization & Growth Tool
Calculate your investment growth over time with compound interest. Compare monthly, quarterly, and annual compounding to maximize your wealth and retirement savings.
What is Compound Interest?
Compound interest is 'interest on interest.' It is calculated on both the initial principal and the accumulated interest from previous periods. This leads to exponential growth, making it a powerful tool for long-term wealth building.
The Power of Time
The earlier you start investing, the more time your money has to compound. Even small amounts can grow significantly over decades.
The Compound Interest Formula
A = P(1 + r/n)ⁿᵗ + PMT × [(1 + r/n)ⁿᵗ - 1] / (r/n)A is the final amount. P is the initial investment. r is the annual interest rate. n is the number of compounding periods per year. t is the number of years. PMT is the recurring monthly contribution.
Growth Scenarios
Power of Small Contributions
Investing just $200 per month at 8% interest for 30 years can result in a portfolio worth over $280,000, despite only contributing $72,000.
Lump Sum Growth
A one-time $50,000 investment at 10% interest, compounded monthly for 20 years, grows to approximately $366,400 without adding another penny.
Investment Logic
Compound Interest Explained - Growth & Visualization
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