This free investment ROI calculator measures the total return on investment, net profit, and annualised return for any capital you put to work β a stock position, a rental property, a small-business stake, or a marketing spend. Enter what you invested, what it is worth or returned, and how long you held it, and the calculator returns three numbers at once: your total ROI as a percentage, the dollar profit, and the compound annual growth rate that makes very different investments genuinely comparable. Everything runs in your browser; nothing you type is stored or sent anywhere.
Return on investment is the first metric almost every investor reaches for, precisely because it ignores the raw dollar size of a decision and expresses performance as a percentage. That is what lets you weigh a $500 trade against a $500,000 property deal on the same scale β and it is why understanding both the total ROI and the annualised version is worth a few minutes before you commit real money.
What Return on Investment Actually Measures
Return on investment is the percentage gain or loss on capital, measured against the amount you originally put in. A positive ROI means the investment produced a profit; a negative ROI means it lost money. Because the calculation is identical across asset classes, ROI is the common language investors, business owners, and analysts use to compare outcomes that would otherwise be impossible to line up side by side. As Investopedia's definition of return on investment explains, its simplicity is exactly what makes it so widely applied β and, occasionally, misleading when time is left out of the picture.
The ROI Formula
The core formula behind this return on investment calculator is straightforward:
ROI = (Final Value β Amount Invested) Γ· Amount Invested Γ 100
Invest $10,000 and end up with $16,000 and you have a $6,000 profit and a total ROI of ($6,000 Γ· $10,000) Γ 100 = 60%. The proportion is what matters, not the size: a 60% ROI on $100 and on $1,000,000 represents identical performance. The calculator also reports the money multiple β how many times over you got your capital back β which many investors find more intuitive than a percentage. A 60% ROI is a 1.6x multiple; doubling your money is a 2x, or 100% ROI.
The same structure works for a business project: swap "final value" for the revenue a project generated and "amount invested" for its total cost, and you have a project ROI. For a marketing campaign, cost goes in as the amount invested and revenue as the final value.
Why Annualised Return (CAGR) Changes the Picture
Total ROI has one blind spot: it says nothing about time. A 60% return earned in a single year is exceptional; the same 60% dragged out over fifteen years is mediocre. The fix is the compound annual growth rate, which converts any multi-period total return into the equivalent steady yearly rate:
CAGR = (Final Value Γ· Amount Invested)(1 Γ· Years) β 1
CAGR is the metric fund managers and analysts use to compare holdings kept for different lengths of time. A 60% total ROI over four years works out to roughly 12.5% a year β a figure you can now weigh directly against any other investment's annual return. This is why the calculator shows both: the headline ROI to describe the whole holding period, and the annualised rate to compare it fairly against alternatives. The SEC's investor education resources lean on the same compounding logic when they explain how returns accumulate over time.
What Counts as a Good ROI?
There is no universal "good" number, because return only means something next to the risk taken to earn it. As a reference point, Investor.gov's guidance on stocks notes that broad US equity markets have historically produced average annual returns in the region of 7β10% over long stretches β the benchmark most people implicitly measure against. Around that baseline:
- Savings accounts and government bonds β lower returns, minimal risk of losing your principal.
- Index funds and ETFs β long-run returns close to the market at very low cost.
- Real estate β returns vary widely by location and combine rental income with capital appreciation.
- Business or startup equity β the highest potential returns, paired with the highest risk and the least liquidity.
A 6% annual return from an insured savings account and a 6% CAGR from a volatile growth stock are not the same achievement. Always read the calculator's annualised figure alongside the risk you accepted and the return you could have had risk-free at the time.
Account for Every Cost to Find True Net ROI
An honest ROI reflects every cost, not just the purchase price. Transaction fees, ongoing management charges, maintenance, taxes on gains, and the value of your own time all eat into real returns β and because fees compound, a seemingly small annual charge can carve a large hole in a long-held investment. For the most accurate result, fold all your costs into the "amount invested" figure and use the genuine net proceeds as the final value. Even so-called risk-free returns move around, as the Federal Reserve's interest rate data shows, so it is worth comparing your result against the risk-free rate that applied when you invested.
How to Use the Investment ROI Calculator
- Enter the amount invested β ideally including fees and other upfront costs for a true net figure.
- Enter the final value or amount returned β what the investment is worth now, or what it paid out net of selling costs.
- Enter the holding period in years β use decimals for partial years (1.5 for eighteen months). Leave it at 0 if you only want the total ROI.
- Click Calculate ROI β total ROI, net profit, annualised CAGR, and the money multiple all appear at once.
The tool earns its keep when you use it comparatively. Run one investment, note the annualised return, then run a second and compare the CAGR rather than the headline percentages β that is the number that tells you which capital worked harder per year.
Pair this with our other free finance tools below β no sign-up, nothing stored. And if you run a business that wants content ranking for questions like these, our team can help.
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ROI is most useful as part of a wider picture. To model how a lump sum grows with reinvested returns over time, use our compound interest calculator. For business decisions, our profit margin calculator breaks down profitability per sale, and our marketing ROI calculator is purpose-built for campaign returns. If you are weighing long-term investing against retirement goals, our retirement calculator projects a nest egg from steady contributions. Browse everything in the free tools hub.
Frequently Asked Questions
ROI = (Final Value β Amount Invested) Γ· Amount Invested Γ 100. It gives the total percentage return regardless of how long you held the investment. This calculator applies the formula instantly and, when you add a holding period, also computes the annualised return (CAGR) so you can compare investments held over different timeframes.
Total ROI measures the overall percentage gain from start to finish and ignores time. CAGR converts that total into an equivalent steady yearly rate, accounting for compounding. A 60% ROI over two years (about 26% CAGR) is far stronger than the same 60% over ten years (about 4.8% CAGR), even though the total ROI is identical β which is exactly why the annualised figure matters when comparing options.
Context decides. The long-run annual return from US equities has historically been roughly 7β10%. A return above that from a low-risk asset would be excellent; the same return from a high-risk venture may not compensate you for the risk. Always compare your annualised result against what you could have earned risk-free at the time.
Yes β the formula does not care what the investment is. Enter a campaign or project cost as the amount invested and the revenue it produced as the final value for a quick ROI. For campaign-specific metrics like conversion and revenue per channel, our dedicated marketing ROI calculator gives a fuller breakdown.
For a true net ROI, yes. Add transaction fees, management charges and other upfront costs to the amount invested, and use the proceeds after selling costs and taxes as the final value. Because fees compound over long holding periods, leaving them out can overstate your real return substantially.
Yes β completely free, with no sign-up, no account and no usage limits. Every calculation runs in your browser and nothing you enter is stored or transmitted. Use it to evaluate as many investments and scenarios as you like.