Demystifying Return on Investment (ROI)
Learn how to evaluate the profitability of stocks, real estate, and business ventures using the Return on Investment (ROI) metric.
What is ROI?
Return on Investment (ROI) is a universal financial metric used to evaluate the efficiency and profitability of an investment. It measures the amount of return relative to the investment's cost. A positive ROI means the investment yielded a profit, while a negative ROI indicates a loss. It is expressed as a percentage.
The Simple Formula
The basic formula for ROI is: (Net Profit / Cost of Investment) x 100. For example, if you buy $1,000 worth of stock and sell it for $1,200, your net profit is $200. Your ROI would be ($200 / $1,000) x 100, which equals 20%. While the math is simple, accounting for fees, dividends, and time horizon makes it complex.
Pro Tip 💡
Always use a reliable calculator to double-check your figures. Financial planning relies heavily on accurate mathematical models. Our free tools on CalcZoon are designed to provide institutional-grade accuracy.
Annualized ROI
A 50% ROI sounds amazing, but if it took 10 years to achieve, the annualized return is a much more modest ~4.1%. When comparing different investments, always look at the Annualized ROI. Our ROI Calculator automatically calculates both your absolute return and your annualized return to give you a true apples-to-apples comparison.