ROI Calculator
Return on investment (ROI) measures how much you gained (or lost) relative to what you put in. Enter the amount you invested and the amount you got back to see your net gain and ROI percentage — a quick way to compare campaigns, purchases, or projects.
- Free — no sign-up
- Private — runs in your browser
- Instant results
How to use the ROI Calculator
- 1Enter amount invested. The total you spent — ad budget, equipment cost, or capital deployed.
- 2Enter amount returned. The total value you received back from that investment.
- 3See your ROI. Get net gain in dollars and ROI as a percentage, updating as you type.
Examples
A marketing campaign
Invested: $2,000
Returned: $5,000Net gain: $3,000
ROI: 150%Spending $2,000 on ads that generated $5,000 in sales is a 150% ROI — you earned $1.50 in profit for every $1 spent, on top of getting your $2,000 back.
A loss-making purchase
Invested: $1,000
Returned: $700Net gain: −$300
ROI: −30%ROI can be negative. Getting back $700 on a $1,000 outlay is a −30% ROI, signalling the investment lost value.
Frequently asked questions
How is ROI calculated?
ROI = (Amount Returned − Amount Invested) ÷ Amount Invested × 100. Investing $1,000 and getting back $1,250 is a 25% ROI.
What is a good ROI?
It varies by context and risk. A positive ROI means you gained value; compare against alternative uses of the money and the time it took to earn the return.
Does ROI account for how long the investment took?
No — basic ROI is a simple ratio and ignores time. A 30% ROI over one month is far better than 30% over five years. When comparing options with different timeframes, look at annualized return, not raw ROI.