Answer: Enter your values and the ROI Calculator returns the exact result instantly — formula, worked example, and a plain-English explanation are included below the tool.
Calculate your Return on Investment — profit, ROI %, and annualized returns
This ROI calculator measures the return on any investment or project: enter what you put in and what you got out, and it computes the percentage return, annualized return (CAGR), and profit. Useful for marketing campaigns, home improvements, side businesses, and portfolios alike.
ROI is the great equalizer of decision-making: it converts any two cash figures into one comparable percentage. But a naive ROI hides timing — which is where annualization comes in.
How to use it: enter the amount you invested, the amount you got back (or expect back), and the holding period in years. The calculator reports simple ROI, total profit, and the annualized rate, so a three-year project and a three-month campaign can be judged on the same scale.
ROI = (final value − cost) ÷ cost × 100. Invest 10,000 dollars and receive 13,500: ROI = 3,500 ÷ 10,000 × 100 = 35%. The formula is symmetric — losing money yields negative ROI, and a total loss is −100%.
Note that ROI alone ignores time, risk, and opportunity cost. A 35% return in one year is spectacular; the same 35% over a decade is roughly 3% a year — underperforming a plain index fund. Always pair ROI with its period.
Compound annual growth rate converts total return to a per-year figure: CAGR = (final ÷ initial)^(1 ÷ years) − 1. Doubling money in 7 years is (2)^(1/7) − 1 = 10.4% per year — consistent with the Rule of 72 (72 ÷ 10.4 ≈ 7).
The reference table computes exact CAGRs for a 2× return over several horizons. CAGR assumes smooth compounding; actual project returns (especially businesses) arrive lumpy, and CAGR only describes the endpoints.
| Doubling period | CAGR (exact) | Rule of 72 estimate (%) |
|---|---|---|
| 3 years | 26.0% | 24 |
| 5 years | 14.9% | 14 |
| 7 years | 10.4% | 10 |
| 10 years | 7.2% | 7 |
Context gives ROI meaning. The cleanest yardstick is the return available for zero skill or effort: buying the whole market and waiting. Anything you actively pick, fund, or operate should be expected to beat that floor, because it costs you risk and time. Rough long-run figures for comparison:
| Investment | Typical annualized return | Risk and effort |
|---|---|---|
| S&P 500 index fund | ~10% nominal (6–7% real) long-run average | Market risk, no effort |
| High-grade bonds | ~4–5% historically, less lately | Modest risk, no effort |
| High-yield savings / CDs | 4–5% in the current rate environment | Near-zero risk, liquid |
| US homes (national average) | ~3–5% appreciation | Lumpy, illiquid, leveraged |
| Small business / side project | 15–30% target, or nothing | High risk plus your labor |
Marketing ROIs are measured differently (revenue or contribution ÷ ad spend) and commonly run higher percentages because media spend is only part of the cost base.
Home improvement ROI is usually quoted as resale value recovered per cost — published cost-vs-value surveys typically show kitchen and bath projects recovering 50 to 100% of cost, while simpler replacements (garage doors, siding) often top the list. Compare any quoted ROI against its definition before trusting the number. For a fuller walk-through of these yardsticks, see what counts as a good ROI.
Two complements sharpen decisions. Payback period: how fast the initial outlay returns as cash — 1,000 dollars generating 250 dollars a year pays back in 4 years. Simple and useful for liquidity-constrained decisions, though it ignores everything after payback.
Risk adjustment matters most: expected ROI should be weighted by probability of success, and any comparison should use the same time frame and cost definitions (include your own labor!). The best decision framework computes ROI, annualizes it, and then asks what could make it wrong.
The classic ROI pitfall is cherry-picked costs. A business "ROI" that ignores founder labor, or a home-flip ROI that excludes closing costs, carrying costs, and taxes, is not a return, it's marketing. Before trusting any quoted ROI, ask what's counted as cost and over what period.
Cash-flow timing matters in real projects: the same 35% total return is worth more if cash arrives early (reinvestable) than late. Discounted metrics like NPV and IRR handle this properly — IRR is essentially the discount rate at which the project's NPV is zero, the finance-grade version of CAGR.
Finally, compare like with like: risk, liquidity, and effort. A 12% ROI on an illiquid rental you manage nightly is not obviously better than 8% on an index fund you never touch. Adjust each return for the probability it goes wrong, and the honest ranking often reverses.
How is ROI calculated?
ROI = (final value − cost) ÷ cost × 100. If you invest 10,000 dollars and get back 13,500, the ROI is (13,500 − 10,000) ÷ 10,000 × 100 = 35%.
What is a good ROI?
It depends on timeframe and risk. A common passive benchmark is the long-run US stock market average of roughly 10% nominal per year. Anything riskier should be expected to beat that; guaranteed investments rarely do.
What's the difference between ROI and annualized ROI (CAGR)?
ROI is the total percentage gain; CAGR spreads it per year: (final ÷ initial)^(1/years) − 1. A 100% total return over 7 years is a 10.4% CAGR — far more useful for comparisons.
What is the Rule of 72?
Divide 72 by an annual return percentage to estimate doubling time: at 8% per year, money doubles in about 9 years (72 ÷ 8). It's an approximation of the exact logarithmic doubling formula, accurate within a fraction of a year for typical rates.
Can ROI be negative or over 100%?
Yes. Losing part of your investment yields a negative ROI, and a total loss is −100%. Returns above 100% mean more than double your money back — common with leveraged or business investments, which is why cost definitions matter.
How do you calculate ROI on a rental property?
Two ways, and they answer different questions. Cash-on-cash return is annual net rental income (rent minus mortgage, taxes, insurance, and upkeep) divided by the cash you put in; a $60,000 down payment generating $4,800 net a year is 8% cash-on-cash. Total ROI counts everything: (sale price + net rents collected − purchase price − renovation and selling costs) ÷ total cost, annualized with CAGR if you held for years.
What does the Additional Costs field do?
It widens the cost base. Every dollar entered is added to the initial investment in both the ROI and the annualized calculations, so fees, materials, carrying costs, and closing costs all shrink the return instead of silently inflating it. Enter the full honest cost of the project and the numbers stop flattering you.