ROI Calculator
Measure the return from a campaign, project or purchase and compare it with your target over a chosen time period.
Investment and return
Include all costs attributable to the investment. Your entries stay in this browser.
Return results
How ROI is calculated
ROI equals (total return − total investment) ÷ total investment × 100. Total investment combines the initial amount and additional costs entered above.
Annualized ROI converts the total growth multiple to an equivalent 12-month rate using compounding. It can look unusually large for short periods and does not account for risk, cash-flow timing or reinvestment.
Worked ROI example
An initial investment of $10,000 plus $2,000 in additional costs creates a $12,000 total investment. If the final return is $15,000, net profit is $3,000 and ROI is 25%. The same percentage can describe very different outcomes, so always keep the investment amount and time period beside the rate.
ROI versus profit and payback
Profit shows the money gained after costs, while ROI expresses that gain relative to the amount invested. Payback period asks how long it takes to recover the investment. Use all three when cash timing or limited working capital matters.
Common comparison mistakes
Do not compare a three-month campaign with a three-year project using raw ROI alone. Keep taxes, financing costs and overhead treatment consistent. For irregular cash flows, a discounted-cash-flow measure such as IRR or NPV may be more informative than this simple calculator.
Use consistent before-tax or after-tax figures. ROI is a planning metric, not financial or investment advice.