Enter what you spent and what you got back. Get the ROI percentage, the profit, and the annualized return — with the math shown step by step.
There are three tabs below depending on what you need: a quick ROI percentage, an annualized return if you held the investment for multiple years, or just the raw profit number.
A simple ROI tells you whether you came out ahead, but it doesn't account for how long your money was tied up. $1,000 turning into $1,500 looks identical whether it took six months or six years — that's why the annualized tab exists, so you can compare investments with different timelines on equal footing.
Understanding ROI becomes easier when looking at practical examples. Here are a few common investment scenarios:
Business Investment Example
A company invests $10,000 in equipment and generates $13,000 in additional revenue.
The ROI calculation shows a 30% return.
Stock Market Example
An investor buys shares for $2,000 and later sells them for $2,600.
The ROI for this investment is 30%.
Marketing Campaign Example
A business spends $3,000 on advertising and generates $4,200 in revenue.
The ROI is 40%.
Although ROI is widely used, it has some limitations that investors should consider when evaluating financial performance.
Because of these limitations, investors often combine ROI with other financial metrics such as IRR or ROE when analyzing investment opportunities.
ROI takes two numbers — what you put in, and what you got out — and turns the difference into a percentage you can compare across completely different investments. A 30% return on a $500 ad campaign and a 30% return on a $50,000 property purchase mean the same thing proportionally, even though the dollar amounts are worlds apart.
That's the entire appeal of ROI: it strips away the scale of the investment so you can judge efficiency, not just size. To see how this compares with marketing-specific metrics, see ROI vs ROAS: marketing vs investment returns explained.
A positive number means the investment turned a profit. A negative number means it lost money — there's no ambiguity in the result itself, only in deciding whether that return was good enough given the risk and time involved.
Example: If you invest $1,000 and receive $1,200, the profit is $200. Dividing $200 by the initial investment of $1,000 gives 0.20, which equals a 20% return on investment.
A 50% ROI sounds great until you find out it took eight years to get there. Annualized ROI fixes this by converting a total return into an average yearly growth rate, factoring in compounding along the way.
This is what lets you compare a two-year investment against a ten-year one on equal terms, instead of just looking at the raw percentage and assuming the longer one performed worse.
Real estate investors use ROI to weigh property appreciation against rental income and holding costs — our Real Estate ROI Calculator breaks this down in more detail, including financing and maintenance costs.
Marketing teams use it to justify ad spend by tying campaign cost directly to revenue generated, which is also where it gets compared to ROAS.
Stock market investors use it to measure gains or losses on share purchases, usually alongside the annualized version when holding periods vary.
Business owners use it to decide whether a new product line, piece of equipment, or operational change was worth the capital it required.
There's no single number that applies everywhere — a good ROI depends on the industry, the risk involved, and how long your money was committed. As a rough starting point:
The trade-off is that higher returns usually carry higher risk. A 40% ROI on a volatile stock isn't automatically better than a steady 8% on a diversified fund — it depends on how much uncertainty you're willing to accept.
Say a business spends $5,000 on a targeted ad campaign and generates $7,500 in attributable revenue. The basic ROI tab shows the percentage instantly. If you want to know what that's worth per year — say the revenue came in over eight months — switch to the annualized tab to see the rate on a yearly basis. If you're evaluating short-term rental income specifically, the Airbnb ROI Calculator walks through a similar scenario with occupancy and seasonality factored in.
ROI is the simplest metric in the room, which is exactly why it's so widely used — but it's not the only one worth knowing. For real estate specifically, see how it stacks up against ROI vs Cap Rate.
Each metric answers a slightly different question. ROI tells you raw profitability; IRR accounts for the timing of cash flows; ROE tells you how efficiently a company uses the equity it has. None of them replace the others — they're complementary.
Different types of investments have variables that a generic ROI formula doesn't fully capture. These guides go deeper into specific scenarios:
Short-term rentals depend heavily on occupancy rates and seasonality. The Airbnb ROI Calculator factors those in to estimate realistic returns.
Real estate purchases involve property value, maintenance, and financing costs that change the picture significantly. The Real Estate ROI Calculator accounts for those variables.
If you're specifically evaluating a rental property's long-term performance, including vacancies and appreciation, see ROI for Rental Property.
In real estate, ROI often gets compared against cap rate — they answer different questions, and ROI vs Cap Rate explains when each one is more useful.
For advertising specifically, ROI is frequently confused with ROAS. They sound similar but measure different things, covered in ROI vs ROAS.
For further reading on ROI and investment analysis:
Investopedia's ROI guide covers the metric's use across industries in more depth.
The Corporate Finance Institute breaks down how analysts apply ROI in formal financial modeling.
For broader economic context on investment trends, the OECD publishes research on global investment performance.