ROI Calculator
Calculate return on investment as a percentage from your cost and final value.
ROI50.00%
Net profit$500.00
ROI = (final value − initial cost) ÷ initial cost × 100. A $1,000 investment that becomes $1,500 has a net profit of $500 and an ROI of (1500 − 1000) ÷ 1000 × 100 = 50%. A negative result means a loss.
Educational estimate only — not professional financial or medical advice.
Questions
How do I calculate ROI?
Subtract the initial cost from the final value, divide by the initial cost, then multiply by 100. Turning $1,000 into $1,500 is a 50% ROI.
What is a good ROI?
It depends on the investment and time frame. ROI does not account for how long the money was invested — a 50% return over one year is very different from 50% over ten years.