How to use the ROI Calculator
- Enter how much you put in.
- Enter what it is worth now or what it returned.
- Add the time held to see the annualized return.
ROI and annualized return
ROI = (final value − investment) ÷ investment. It ignores time, so a 35% return over 3 years and over 1 year look the same. The annualized return (CAGR), (final ÷ initial)1/years − 1, makes them comparable: 35% over 3 years is about 10.5% a year.
Plan growth with the Compound Interest Calculator.
Also searched as: return on investment calculator, roi formula, annualized return calculator, cagr calculator, investment return calculator.
Tools that pair well with the ROI Calculator
- Savings Goal Calculator — Find out how much to save each month to reach a goal — a house deposit, a car, a trip or an emergency fund — including interest on your savings.
- Retirement Calculator — Project how much you’ll have at retirement from today’s savings and monthly contributions — and the monthly income it could support with the 4% rule.
- Profit Margin Calculator — Enter your cost and selling price to get profit, margin and markup — or set a target margin and get the price to charge.
- Break-even Calculator — Find how many units you need to sell — and how much revenue — to cover your fixed costs, plus what it takes to reach a target profit.
Frequently asked questions
What is a good ROI?
It depends on risk. Broad stock-market indexes have returned around 7–10% a year over long periods; riskier projects should promise more.
How is ROI different from profit?
Profit is the amount gained; ROI expresses it as a percentage of what you invested, so different investments can be compared.
Is anything I enter saved or sent?
No. The calculation runs in your browser. Your last inputs are remembered on this device only, so the page opens where you left off.
Can I install ROI Calculator as a web app and use it offline?
Yes. ROI Calculator is an installable web app (PWA) — installed from your browser, not downloaded from an app store. Click Install app at the top of this page in Chrome or Edge (Windows, macOS, Linux, ChromeOS) or on Android, use Share → Add to Home Screen on iPhone and iPad, or File → Add to Dock in Safari 17+ on a Mac. It then opens in its own window with its own icon, and because it runs entirely in your browser it keeps working offline. Firefox on desktop can’t install web apps. How installing works.