Compute return on investment as a percentage — free, instant, no sign-up.
Was it worth it? Our free ROI Calculator answers with two numbers — net profit and ROI percentage — from your investment cost and total return. The universal scorecard for campaigns, projects, and purchases.
Return on investment (ROI) expresses profit as a percentage of what you put in. Invest $10,000, get back $14,500: net profit is $4,500 and ROI is 45% — every dollar returned $1.45. One number that compares a marketing campaign, a stock trade, and a renovation on equal terms.
Enter your investment cost and total return — the $10,000 / $14,500 defaults show a solid winner — and get net profit plus ROI with an instant read.
ROI is finance’s common language because it strips away scale. A $4,500 profit means little alone — brilliant on a $10,000 investment (45%), trivial on a $1,000,000 one (0.45%). The percentage lets a $500 ad test and a $5M acquisition compete for the same budget on merit, which is exactly what capital allocation meetings do with it.
The formula has two outputs because each answers a different question. Net profit (return minus cost) answers “how many dollars did we make?” — the number that pays bills. ROI % (profit divided by cost, times 100) answers “how efficiently?” — the number that compares opportunities. A campaign with 200% ROI on $1,000 beats a 10% ROI on $100,000 on efficiency, but the second made more money — report both, decide with both.
ROI’s famous blind spot is time. A 45% ROI in one month annualizes to far more than 45% in three years, but the basic formula treats them identically. For multi-year investments, annualized ROI — (1 + ROI)^(1/years) − 1 — restores comparability: 45% over 2 years annualizes to ~20.4%. Always attach a timeframe to an ROI claim, or it’s marketing, not math.
The other blind spot is what counts as cost and return. Marketing ROI should use fully-loaded cost (spend + labor + tools) and incremental return (revenue that wouldn’t have happened anyway) — counting revenue that would have arrived regardless flatters every campaign. Define both sides before computing, or the percentage will lie with a straight face.
Key terms:
Subtract cost from return for profit; divide profit by cost and multiply by 100 for ROI %. Cost must be greater than zero.
A campaign costs $10,000 all-in and generates $14,500 in attributable revenue. ROI?
At 45% ROI, each additional $1,000 of identical spend projects ~$450 profit — the scaling argument writes itself.
Cost $10,000, return $8,200.
Negative ROI is the formula working as intended — it prices the loss honestly so decisions can be fast.
Project A: 45% ROI over 6 months. Project B: 60% ROI over 2 years.
Timeframe-naive ROI comparisons are how mediocre long projects beat excellent short ones in budget fights.
Two departments pitch for $10,000. Paid search projects $14,500 return → $4,500 profit, 45% ROI. Content marketing projects $16,000 return over 12 months → $6,000 profit, 60% ROI. The headline says content wins — but search returns in 1 month (annualized ~6,800%) while content takes a year. Finance funds search now and content from next quarter’s budget: ROI picked the ranking, annualization picked the timing. Both numbers mattered.
Second scenario: a landlord’s renovation: $10,000 cost, rent rises $300/month = $3,600/year → first-year ROI 36% on cash flow, plus ~$8,000 estimated value uplift → total return $11,600, ROI 16% in year one, compounding as rents persist. ROI on durable assets understates multi-year reality — the formula is a snapshot, not the film.
Third: a stock trade: $10,000 in, $14,500 out after fees and taxes → 45% ROI. But inflation ran 4% and the holding period was 18 months — real annualized ROI ≈ 24%. Net-of-everything ROI (fees, taxes, inflation, time) is the only ROI that buys groceries.
Fourth: a training program: $10,000 cost, team productivity gains valued at $14,500 → 45% ROI — if the valuation holds. Soft returns need honest measurement (before/after output metrics) or ROI becomes creative writing. When returns are estimated, show the range: 30–60% ROI beats a false-precise 45%.
Typical ROI targets: paid marketing campaigns 30–100%+ (below ~20% rarely scales); email marketing famously 3,600%+ claimed (revenue-based, treat skeptically); stock market long-run ~7–10% annualized real; small-business projects 15–30% hurdle rates. The hurdle-rate concept: companies set minimum acceptable ROIs (often 15–25%) — projects below the hurdle don’t get funded no matter how positive. Your 45% example clears most corporate hurdles.
ROI vs. its cousins: ROAS suits ad-platform reporting (revenue per ad dollar); profit margin suits per-unit economics; IRR suits multi-year cash flows with timing; payback period suits cash-constrained decisions. ROI is the generalist — use specialists when their assumptions fit better.
Edge cases and pro tips: zero or negative cost breaks the formula (division by zero) — free tactics need profit-per-hour instead. Negative ROI beyond −100% is impossible on a single cash investment (you can’t lose more than you put in) but possible with leverage or ongoing costs. For ongoing programs, compute ROI per period (monthly/quarterly), not cumulatively since launch — early losses shouldn’t mask current performance. And risk-adjust: a certain 20% beats a coin-flip 45% — expected value, not headline ROI, allocates capital.
When ROI is the wrong metric: for brand building, returns arrive over years and resist attribution — judge on awareness and consideration lifts. For strategic options (a pilot that buys learning), the return is information, not cash. And for compliance or safety spending, ROI framing is category error — some investments exist to prevent catastrophe, not to profit. ROI prices the measurable; leadership prices the rest.
ROI is the generalist; specialists often decide better. IRR (internal rate of return) handles multi-year cash flows with irregular timing — where simple ROI just sums totals, IRR finds the annualized rate that zeroes the net present value, correctly penalizing late returns. For a 3-year project with uneven cash flows, IRR is the honest number; ROI is the headline.
Payback period answers the cash question ROI ignores: how fast do I get my money back? A 45% ROI that pays back in 2 months beats a 60% ROI that pays back in 3 years for any cash-constrained business. Report the pair — efficiency and timing — and let the decision-maker weight them.
Hurdle rates turn ROI from a measurement into a policy. Set a minimum acceptable return (say 20%) reflecting your cost of capital and risk appetite; projects below the hurdle don’t get funded regardless of positivity. Hurdle rates stop the endless debate over “is 18% good?” — good is defined in advance, and capital allocation becomes mechanical rather than political.
Finally, risk-adjust before comparing. A certain 25% ROI beats a speculative 45%: multiply by estimated probability of success for an expected ROI (0.9 × 25% = 22.5% vs. 0.4 × 45% = 18%). Expected value, not headline percentage, is how professionals allocate — and it’s the math that keeps one lucky win from funding ten likely losses. Make expected ROI the default column in every investment comparison sheet, and re-estimate probabilities quarterly as real results replace guesses.
Always distinguish nominal from real ROI. A 45% nominal return during 4% annual inflation over 18 months is roughly (1.45 / 1.04^1.5) − 1 ≈ 36.4% in real purchasing power — still excellent, but honesty matters when comparing across eras or currencies. Similarly, after-tax ROI is the spendable truth: short-term trading gains, ordinary income treatment on some investments, and deductible costs all shift the final number. Compute ROI three ways — nominal, real, and after-tax — for any decision over ~$10,000 or longer than a year. The extra arithmetic takes minutes and occasionally reverses the verdict, which is precisely when it earns its keep.
Finally, document your assumptions alongside every ROI you publish: what counted as cost, what counted as return, over what period, and whether figures are nominal or real. An ROI with stated assumptions invites trust and survives scrutiny; one without them invites exactly the argument you wanted the number to settle.
ROI = (net profit / investment cost) x 100; net profit = total return – cost. ($14,500-$10,000)/$10,000 = 45%. Report profit and rate together; annualize multi-period ROIs; use incremental return and fully-loaded cost; distinguish ROI (profit-based) from ROAS (revenue-based). Source: Sigma Calculator, ROI Calculator, https://sigmacalculator.net/digital-marketing-calculators/roi-calculator-2/
Cite this page as: ROI Calculator, Sigma Calculator, https://sigmacalculator.net/digital-marketing-calculators/roi-calculator-2/
Last updated: October 12, 2026