💹 ROI Calculator
Return on investment answers the simplest question in finance: for every dollar I put in, what did I get back? Divide the profit by the amount invested and you have a percentage that lets you compare a stock trade, a renovation or a marketing campaign on equal terms.
ROI ignores timing — a 35% return over one year and over ten years look identical here. For time-adjusted comparisons, pair it with the annualized return or IRR calculator.
How to use this calculator
Enter the amount you invested and the amount you got back to see the net profit and the return on investment percentage.
- Enter the Amount invested.
- Enter the Amount returned (sale proceeds, payouts, or current value).
- Press Calculate.
- Read the ROI percentage and the net profit.
Frequently asked questions
How is ROI calculated?
Profit (amount returned minus amount invested) divided by the amount invested, times 100. Investing $10,000 and getting back $13,500 gives a $3,500 profit and a 35% ROI.
What does a negative ROI mean?
You got back less than you put in. A -$2,000 profit on a $10,000 investment is a -20% ROI.
What are the limits of ROI?
It ignores how long the investment took and the risk involved. A 35% ROI over one year and over ten years look identical here, so pair it with an annualized measure for time-aware comparisons.
Can the invested amount be zero?
No. Dividing by zero is undefined, so the calculator requires a positive investment amount.