ROI
ROI = (total return - investment cost) / investment cost × 100
ROI Calculator
Efficiency Measurement Monitor
Analyze the efficiency of an investment by comparing costs to gains.
Return on Investment
50.0%
Net Profit
₩5,000,000
Multiplier
1.50x
A positive ROI indicates a gain, negative indicates a loss.
ROI shows how efficiently an investment returned value
Return on investment expresses net gain as a percentage of the cost. It is useful when comparing projects, campaigns, equipment purchases, or investments where both the upfront cost and the amount recovered are known.
Core formulas
Net profit
Net profit = total return - investment cost
Return multiple
Return multiple = total return / investment cost
How to use
- Enter the original amount spent as the investment cost.
- Enter the total amount recovered or received from the investment.
- Read ROI, net profit, and return multiple together before comparing options.
Frequently asked questions
What does 0% ROI mean?
It means the return equals the cost, so the investment is at break-even before any other fees or taxes.
Is ROI the same as annual return?
No. ROI covers the whole holding period. Annual return adjusts the result to a one-year basis.
Should fees and taxes be included?
For real decisions, yes. Excluding fees, taxes, and timing can make ROI look better than the actual outcome.
This tool is for general calculation. Confirm official tax, fee, and investment figures with the relevant authority or adviser.