COMPOUND INTEREST CALCULATOR

See How Your Money Could Grow Over Time

Discover how small, consistent investments can add up to big opportunities. Use our free compound interest calculator to see what your money could be worth and take the next step toward your financial goals.

Compound Interest Calculator

Your Investment Details

Adjust the assumptions below to see how your money could grow over time.

Not sure what to use? A 5–7% return is a common example for illustrating long-term growth. Actual investment returns will vary.
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Your Projection

See How Your Money Could Grow

Enter your investment information above and click Calculate Growth to see your projected future value, compound interest, year-by-year growth, and potential opportunities.

Your Results

See What Compound Growth Could Do

Based on your assumptions, here’s how your investment could grow over time.

Projected Future Value $0 Projected ending balance
Total Money Invested $0 Your initial investment + contributions
Growth From Interest $0 0% of ending balance
Growth Multiple 0× See how time and compounding can affect your results.

Growth Over Time

Compare the amount you invested with your projected ending balance.

Year-by-Year Breakdown

See how contributions and compound interest build over time.

Year Starting Balance Interest Contribution Ending Balance
Totals $0 $0 $0
What If?

Small Changes Can Make a Big Difference

See how changing just one part of your strategy could affect your projected ending balance.

+$
Add $100 Per Month $0 +$0 compared with your current projection
%
Earn 1% More $0 +$0 compared with your current projection
10
Invest for 10 More Years $0 +$0 compared with your current projection
Personalize Your Plan

Turn Your Projection Into a Financial Plan

A compound interest projection can show what may be possible, but your financial plan also needs to account for taxes, investment strategy, retirement income, Social Security, healthcare, and your personal goals. Meet with one of our fiduciary financial planners to talk through your situation and see what your next steps could look like.

Schedule a Free Discovery Meeting →
Your Projected Balance $0 Let’s see how this fits into your complete financial plan.

Still Have Questions?

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Common Questions

Compound interest is the process of earning interest not only on your original investment but also on the interest your money has already earned. Over time, this “interest on interest” can significantly increase the value of your savings or investments, making compound growth one of the most powerful tools for building long-term wealth.
Your future investment value depends on four key factors: your starting balance, regular contributions, investment returns, and the amount of time your money remains invested. Even modest annual contributions can grow substantially over several decades when investment earnings are consistently reinvested.
Many long-term investors use assumptions between 6% and 8% annually for diversified investment portfolios. Because future returns are never guaranteed, it’s often helpful to compare several scenarios using different rates to understand how changes in performance could affect your results.
Increasing your annual or monthly contributions can have a meaningful impact on your long-term savings. Regular contributions continue purchasing investments over time while also benefiting from compound growth, often producing much larger balances than relying solely on your initial investment.
Yes. While your account balance may continue growing, inflation reduces purchasing power over time. That’s why it’s important to focus on both investment growth and maintaining enough long-term returns to outpace inflation throughout retirement.
Yes. This calculator provides a helpful estimate of how your retirement savings could grow based on your assumptions. A financial advisor can help incorporate taxes, withdrawals, Social Security, and other retirement income sources into a more comprehensive retirement plan.
Online calculators provide helpful estimates, but they cannot account for every aspect of your financial situation. A comprehensive retirement plan considers your investments, taxes, Social Security, Medicare, estate planning, and long-term income needs together. If you’d like personalized guidance, our fee-only fiduciary advisors can help you build a plan tailored to your goals.
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