ROI Calculator
Calculate return on investment and annualized ROI for any investment.
What is ROI?
The metric has one important limitation: it says nothing about time. A 50% ROI sounds great, but it means something very different over 2 years versus 20. That's why annualized ROI (also called CAGR — Compound Annual Growth Rate) is the more meaningful number for comparing investments held over different periods. It tells you the steady yearly rate of growth that would produce the same final value.
How does your ROI compare?
Interpreting your result
ROI vs. other investment metrics
Internal Rate of Return (IRR) finds the discount rate at which an investment's NPV equals zero — essentially the break-even return rate. It's the standard metric in venture capital and private equity because it accounts for the timing and size of every individual cash flow, not just the start and end values.
The Payback Period is simpler: it answers "how long until I get my money back?" It ignores everything that happens after breakeven, so it doesn't measure profitability — but it's invaluable for assessing liquidity risk and short-term cash flow needs. For most personal investments, tracking all three alongside ROI gives you a much fuller picture than any single number alone.
ROI in practice
For real estate, the calculation gets more involved. Your initial investment should include the down payment, closing costs, and any upfront renovation work. Final value includes both the resale price and the cumulative rental income collected along the way — minus ongoing expenses like property tax, insurance, maintenance, and management fees. Many real estate investors calculate cash-on-cash return separately: annual rental cash flow divided by total cash invested, which ignores appreciation and focuses purely on income yield.
Business investments — new equipment, a marketing campaign, hiring a sales team — use the same formula but require careful definition of what counts as "return." For marketing, this is typically incremental revenue attributable to the campaign. Always use net profit, not gross revenue, in the numerator; inflating the return by using revenue while putting only direct costs in the denominator overstates ROI significantly.
What ROI doesn't tell you
Ways to improve your ROI
Reinvesting returns rather than withdrawing them is one of the highest-leverage improvements available. Compounding turns a modest annual return into dramatic long-term growth — the longer the period, the greater the effect. A 10% annual ROI with returns reinvested over 20 years produces a 6.7× multiplier; without reinvestment it produces only a 3×.
For business or real estate investments, focus on reducing the initial cost basis through negotiation, buying off-market, or timing your entry. A lower cost base improves ROI immediately and permanently — every dollar you don't spend upfront is a dollar that doesn't need to be earned back.
Frequently asked questions
Return on investment (ROI) measures how much profit or loss an investment generates relative to its cost. Expressed as a percentage, it is the single most common way to compare the performance of very different investments — stocks, real estate, a marketing campaign or a new piece of equipment — on a level playing field.
This calculator turns the amount you invested and the amount you got back into a clear ROI percentage and net gain, so you can judge at a glance whether an investment paid off.
The ROI formula explained
ROI is calculated as: ROI = (Net profit ÷ Cost of investment) × 100, where net profit is the final value minus the original cost. For example, if you invest $1,000 and it grows to $1,250, your net profit is $250 and your ROI is ($250 ÷ $1,000) × 100 = 25%.
A positive ROI means the investment gained value; a negative ROI means it lost value. Because it is a ratio, ROI lets you compare a small investment against a large one fairly.
Why ROI alone is not enough
ROI ignores time. A 25% return earned in one year is far better than the same 25% earned over ten years. To account for this, investors also look at annualised ROI or the compound annual growth rate (CAGR), which express the return on a per-year basis. ROI also excludes risk — a high potential return usually comes with a higher chance of loss.
Using ROI for business decisions
Beyond investing, ROI is widely used to evaluate business spending. Marketing teams measure the ROI of a campaign (revenue generated ÷ campaign cost), while operations teams use it to justify equipment purchases. When comparing projects, the one with the higher ROI generally delivers more value per dollar spent — but always weigh it against payback time and strategic fit.
Calculates Return on Investment (ROI) — how much profit or loss you made relative to your investment, both as a percentage and annualized. Used for comparing investments, marketing campaigns, and business projects.
Total ROI = ((Final − Investment) ÷ Investment) × 100 Annualized ROI = ((Final ÷ Initial)^(1/years) − 1) × 100