Compound Interest Calculator

Investment details

Total Balance

$0.00

How to Use The Compound Interest Calculator

1) Enter Your Initial Deposit

• This is the amount of money you start with.

• Example: If you have $5,000 saved up and ready to invest, type $5,000.

2) Choose How Long You’ll Invest

• Type the number of years you plan to keep your money invested (e.g., 5 years, 10 years, etc.).

3) Estimated Rate of Return

• Enter the yearly interest or growth rate you expect.

• Example: 4.5% means you think your investment might grow by about 4.5% each year on average.

4) Pick a Compound Frequency

• Monthly compounding applies interest every month.

• Annually compounding applies interest once a year.

• Monthly compounding typically grows a bit faster because the interest is added more often.

5) Contribution Amount (Optional)

• If you plan to add extra money to your investment periodically, enter that amount here (like $100).

• You can choose if you’ll add it monthly or annually.

6) Click “Calculate”

• The calculator will show your Total Balance at the end of the period.

• The chart will let you see how your balance grows year by year (or month by month).

What Is Compound Interest?

Compound interest means earning interest on your interest.

• Suppose you invest $1,000 at 5% annual interest. After one year, you’d earn $50 in interest, so you’d have $1,050.

• The next year, you earn interest on $1,050, not just the original $1,000. So you’ll get $52.50 in interest, and now have $1,102.50.

• Over time, this “interest on interest” accelerates your growth. That’s what makes compound interest so powerful for growing wealth!

Tips and Notes

1. Adjust Your Numbers Anytime

• Try different interest rates or change the number of years. Then click Calculate again.

• You’ll see the chart update automatically.

2. Higher Compounding Frequency Can Lead to Slightly More Growth

• Monthly compounding adds interest each month. That small difference can make a bigger impact if you’re investing for many years.

3. Consistent Contributions Make a Big Difference

• Adding even a modest amount ($50 or $100) every month can significantly boost your final balance.

4. This Is an Estimate

• Real investments can vary. This calculator shows a rough idea of how compound interest might work under steady conditions.

5. Enjoy Experimenting

Feel free to change the numbers to see how they affect your potential future balance. It’s a great way to learn how saving and investing can grow over time.

Thank you for using our compound interest calculator. We hope it helps you understand the power of compound interest and motivates you to keep investing for your future.


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