What is future value?
Future value (FV) is the amount of money you’ll have at a later date if you invest or save a sum today and let it earn interest (or returns) over time. Think of it as “today’s money, tomorrow’s number.†For example, if you put $1,000 in a savings account that pays 5% per year, in 10 years that single deposit could grow to more than $1,600—without you adding another cent. When you add regular deposits (like monthly or yearly contributions), the future value grows even more, because each new deposit has its own time to earn interest. That’s why a future value calculator is so useful: it turns your assumptions into a clear number you can plan around.
How this future value calculator works
This tool combines two ideas: the growth of a lump sum (your starting amount, or present value) and the growth of a series of equal payments (your periodic deposit, or PMT). You choose how many periods you’re saving for, the interest rate per period, and whether each deposit is made at the beginning or end of the period. The calculator then applies standard finance formulas to compute your total future value. It also builds a schedule showing, for each period, the starting balance, the deposit, the interest earned, and the ending balance—so you can see exactly how your balance builds over time. The donut chart and bar chart break down how much of the final amount comes from your starting sum, your deposits, and interest.
How to use it
Pick your currency, then enter the number of periods (e.g. 10 if you’re saving for 10 months or 10 years, depending on how you define a period). Enter your starting amount—the present value—and the interest rate per period as a percentage (e.g. 6 for 6%). If you plan to add money regularly, enter the periodic deposit and choose whether that deposit happens at the beginning or end of each period. Click Calculate to see your future value, the summary table (PV, total deposits, total interest), the donut chart, the full schedule, and the growth-by-period chart. Use Clear to reset and try different numbers. There’s no sign-up or download; everything runs in your browser.
When to use a future value calculator
People use an FV calculator for all kinds of goals. Saving for a down payment? Plug in your current savings, the rate you expect (e.g. from a high-yield account), and how much you’ll add each month. Planning for retirement? Use years as periods and see how a lump sum plus monthly or yearly contributions can grow. Comparing investments? Run the same present value and period count at different interest rates to see how rate changes affect the outcome. Teachers and students use it to understand compound interest and the time value of money. Whether you’re checking a rough target or double-checking a financial plan, a future value calculator gives you a clear, numeric result without opening a spreadsheet.
The math behind future value
The future value of a single sum (your starting amount) is: FV = PV × (1 + r)n, where r is the interest rate per period (as a decimal) and n is the number of periods. So $1,000 at 6% per period for 10 periods becomes $1,000 × (1.06)10 ≈ $1,791. When you add a fixed deposit every period, the formula depends on timing. If you deposit at the end of each period, the future value of those deposits is PMT × [((1 + r)n − 1) / r]. If you deposit at the beginning of each period, each payment gets one extra period of growth, so you multiply that result by (1 + r). This calculator uses those formulas so the numbers you see are consistent with standard finance theory.
The schedule is built one period at a time: starting balance plus deposit (if at beginning), then interest on that balance, then add the deposit (if at end). That way you see how much interest you earn in each period and how the balance compounds. The “total interest†in the results is simply: future value minus present value minus total deposits. So you know exactly how much of your final amount is growth, not principal.
Tips for savers and investors
Small changes in rate or time can have a big effect on future value. Try bumping the interest rate by 1% or extending the number of periods—you’ll see the difference in the chart and schedule. If you’re adding deposits, try “beginning†vs “end†of period; beginning usually gives a slightly higher FV because each deposit compounds one extra period. Use realistic rates: for bank savings, look at current APY; for long-term investing, many people use a conservative average annual return. Remember that this calculator assumes a fixed rate and regular deposits; real markets vary, so treat the result as a projection, not a guarantee. Finally, use the schedule to see when interest starts to outweigh your deposits—that’s the power of compounding in action.
Common questions
Does the order of inputs matter? No. Enter periods, PV, rate, and PMT in any order; the calculator uses the values you’ve set when you click Calculate.
What if I don’t add periodic deposits? Set periodic deposit to 0. The tool will show the future value of your starting amount only, plus the schedule and charts for that scenario.
Is the rate per period or per year? The rate you enter is the rate per period. So if one period is one year, 6% means 6% per year. If one period is one month, 0.5% would be 0.5% per month (roughly 6% per year compounded monthly). You decide what a “period†is; the calculator doesn’t assume years or months.
Is this free? Yes. The future value calculator is free to use, with no sign-up or account. You can change currency, adjust all inputs, and recalculate as often as you like. We don’t store your data.
Summary
This future value calculator helps you see how much a lump sum and optional periodic deposits can grow over a set number of periods at a given interest rate. You get a single FV number, a breakdown (PV, total deposits, total interest), a donut chart, a full period-by-period schedule, and a growth chart—all in a human-friendly format. Use it for savings goals, retirement sketches, or to compare different rates and deposit patterns. The math is standard; the interface is straightforward; and you stay in control of your numbers. No sign-up, no install, just enter your assumptions and click Calculate.