Calculate return on investment (ROI) instantly — enter your initial investment and total return to see ROI percentage, net profit, and whether the investment gained or lost value. Results update live.
Frequently Asked Questions
How is ROI calculated?
ROI = ((Return − Investment) ÷ Investment) × 100. For example, $13,500 return on a $10,000 investment gives a 35% ROI and $3,500 net profit.
What is a good ROI?
It depends on the asset and timeframe. Stock market averages ~10% annually long-term. Marketing campaigns often target 200–500% ROI. Always compare against your cost of capital and risk.
What if my return is less than my investment?
You have a negative ROI — a net loss. The calculator shows negative percentages and highlights the result in red.
Can I calculate profit margins too?
Yes. Use the Profit Margin Calculator for revenue-based margin and markup calculations.
Is this tool free and does it work on mobile?
Yes on both counts. The ROI Calculator on draft21 is completely free with no sign-up required and works on all devices.