Compound interest is one of the most powerful tools in personal finance. Whether you’re saving for retirement, building an emergency fund, or investing for a long-term goal, understanding how compound interest works can make a significant difference.
Our Compound Interest Calculator helps you visualize how your money can grow over time based on your initial investment, interest rate, regular contributions, and compounding frequency.
This tool allows you to:
Enter your initial investment amount
Set an annual interest rate
Choose a time period (in years)
Add regular contributions (monthly, weekly, etc.)
Select how often the interest is compounded and how frequently you contribute
Based on these inputs, the calculator will show you:
Future value of your investment
Total interest earned
Total contributions made
Total return as a percentage
A year-by-year breakdown
A visual chart of your projected growth
Compound interest means earning interest on both your original principal and any accumulated interest. When you add regular contributions into the mix, your growth accelerates even more.
The formula used accounts for both the compounding of the initial investment and any additional contributions. It adjusts for differences in compounding and contribution frequencies to give you an accurate projection.
Understanding how compound interest works puts you in control. Small changes—like increasing your contribution or adjusting the frequency—can significantly improve your long-term results.
This calculator helps you make informed decisions about saving, investing, and planning for the future.
Calculate how your money can grow with compound interest
