Finance calculators
Compound Interest Calculator: Watch Your Savings and Investments Grow
Use a compound interest calculator to see how investments grow over time with regular contributions and compounding returns.
The power of compound interest
Albert Einstein called compound interest "the eighth wonder of the world." When interest earns interest, your money grows exponentially. A compound interest calculator shows this growth over decades.
How compound interest works
Interest is calculated not just on your initial investment, but also on accumulated interest. The more frequent the compounding (daily, monthly, annually), the more you earn. Over long periods, this dramatically increases wealth.
Using the compound interest calculator
Enter initial investment, monthly contribution, annual interest rate, and time period. The calculator shows total principal invested, interest earned, and final amount. Compare different rates and timelines.
Real-world investment examples
A $10,000 initial investment with $200/month contributions at 7% annual return grows to over $250,000 in 25 years. Starting early and staying consistent are key to wealth building.