Percentage Calculator
Calculate percentage of a number, percentage change, what percent one number is of another, and percentage increase or decrease. Instant results with step-by-step formula explanations.
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Future Value Calculator
Calculate how much any investment will be worth in the future using compound interest. Supports lump-sum plus periodic contributions, 7 compounding frequencies (daily to annually + continuous), inflation adjustment, and a full year-by-year growth breakdown with principal vs interest composition.
⚙ Advanced — Inflation Adjustment
Future Value in 2046
$167,072.11
Total Invested
$58,000.00
Interest Earned
$109,072.11
Return Multiple
2.88×
Eff. Annual Rate
8.300%
Composition of Future Value$167,072.11
Principal $10,000.00 (6.0%)Contributions $48,000.00 (28.7%)Interest $109,072.11 (65.3%)
Year-by-Year Growth
| Year | Balance |
|---|---|
| 1 | $13,319.98 |
| 5 | $29,593.83 |
| 10 | $58,785.61 |
| 15 | $102,276.86 |
| 20 | $167,072.11 |
Show Calculation Steps
- 1.Present Value: $10000.00
- 2.Rate: 8% / yr | Compound: monthly
- 3.Period: 20 years
- 4.FV (lump sum): $49268.03
- 5.FV (contributions): $117804.08
- 6.Total FV = $167072.11
- 7.Effective Annual Rate: 8.3000%
What Is a Future Value Calculator?
A future value (FV) calculator tells you exactly how much an investment or savings plan will be worth at a specific point in the future, given a starting amount, an annual return rate, a compounding frequency, and optional regular contributions. It is the foundational tool of personal finance and investment planning.
Unlike simple-interest calculations, this tool uses compound interest — where interest earned in one period itself earns interest in subsequent periods. Over long time horizons this creates exponential growth, famously described as "the eighth wonder of the world" by Albert Einstein.
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Retirement Goals
Project your 401(k), IRA, or pension pot to set confident savings targets.
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Education Fund
Calculate how much to save monthly to cover future tuition costs.
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Down-Payment Savings
Plan how long it takes to grow a deposit fund to a target amount.
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Investment Comparison
Compare CDs, bonds, equities, and real estate side-by-side using the same formula.
How to Use This Calculator
- 1Enter Your Initial AmountType in how much you have today — your lump-sum investment, savings balance, or opening deposit. Use 0 if you are starting from scratch.
- 2Set Your Annual Return RateUse our presets for common benchmarks (S&P 500 historical 10%, HYSA 4.5%, bonds 5%) or type any custom rate. This is the nominal annual rate before compounding.
- 3Choose Years & Compounding FrequencySet the investment horizon and how often interest compounds. Monthly is most common for savings accounts; daily for some CDs. More frequent compounding = higher effective rate.
- 4Add Regular ContributionsEnter how much you contribute each compounding period — monthly contributions if monthly, weekly if weekly. Toggle end-of-period (typical) vs beginning-of-period to compare.
- 5Review the BreakdownThe results show future value, interest earned, return multiple, and a full year-by-year table. Toggle inflation adjustment in Advanced to see real purchasing power.
How the Calculation Works
This calculator combines two standard finance formulas — the compound interest FV formula for the lump sum, and the future value of an annuity for periodic contributions.
Lump-Sum Future Value
FV = PV × (1 + r/n)n×t
Annuity Future Value (end of period)
FV = PMT × [((1 + r/n)n×t − 1) / (r/n)]
PV
Present value — your initial lump sum today
PMT
Periodic payment — your regular contribution
r
Annual nominal rate (decimal form, e.g. 0.08)
n
Compounding periods per year (e.g. 12 for monthly)
t
Time in years
EAR
(1 + r/n)^n − 1 — effective annual rate
Rule of 72
Divide 72 by your annual return rate to estimate how many years it takes to double your money. At 8% → 72 ÷ 8 = 9 years to double. At 10% → 72 ÷ 10 = 7.2 years.
Worked Example
Scenario: James invests $10,000 today and adds $300/month into an index fund returning 8% per year, compounded monthly, for 30 years.
| Initial investment (PV) | $10,000.00 |
| Monthly contribution (PMT) | $300.00 |
| Annual return rate | 8% |
| Compounding frequency | Monthly (12×/yr) |
| Investment horizon | 30 years |
| Effective Annual Rate (EAR) | 8.300% |
| FV (lump sum only) | $109,357.30 |
| FV (contributions) | $408,080.03 |
| Total invested | $118,000.00 |
| Interest / growth earned | $399,437.33 |
| Total Future Value | $517,437.33 |
| Return multiple | 4.38× |
James turns $118,000 of actual money invested into $517,437 — with compound interest contributing $399,437 (77% of the final value). This is the power of compound interest over a 30-year horizon.
How Compounding Frequency Affects Growth
$10,000 invested at 8% per year for 30 years — only the compounding frequency changes:
| Frequency | EAR | Future Value |
|---|---|---|
| Annually | 8.000% | $100,626.57 |
| Semi-Annually | 8.160% | $103,796.57 |
| Quarterly | 8.243% | $105,306.94 |
| Monthly | 8.300% | $109,357.30 |
| Daily | 8.328% | $111,202.51 |
| Continuously | 8.329% | $111,232.80 |
Frequently Asked Questions
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Explore This Tool in Context
Future Value Calculator is part of the Financial Calculators collection. If you want a broader view of similar workflows, open the Financial Calculators category page or browse all QuickTools categories.
Common next steps after this tool include Percentage Calculator, Discount Calculator and Loan Interest Calculator.
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