ROI Calculator
Calculate your return on investment as a percentage with annualized returns
What is an ROI calculator?
An ROI calculator measures the profitability of an investment by comparing the amount returned to the amount invested, expressed as a percentage. It helps investors evaluate performance, compare opportunities, and make informed decisions. Enter your invested and returned amounts to instantly see your total ROI, annualized ROI, and net profit or loss.
Return on Investment
50.00%
Total ROI percentage
Annualized ROI
14.47%
Net Profit
$5,000.00
Gain on investment
Amount Invested
$10,000.00
Amount Returned
$15,000.00
How is ROI calculated?
Return on Investment is calculated by dividing the net profit by the initial investment cost, then multiplying by 100 to express it as a percentage. Annualized ROI adjusts the total return to reflect a per-year rate, enabling fair comparisons across investments held for different time periods.
ROI Formula
Where Returned is the total amount received back and Invested is the original amount put in.
Annualized ROI Formula
Where ROI is the total return expressed as a decimal and years is the investment holding period.
Variable Definitions
- ROI: Return on Investment as a percentage
- Returned: Total amount received back from the investment
- Invested: Original amount put into the investment
- years: Number of years the investment was held
A positive ROI indicates a profitable investment, while a negative ROI indicates a loss. Annualized ROI is only calculated when an investment period is provided.
Frequently Asked Questions
ROI stands for Return on Investment. It is a financial metric that measures the profitability of an investment as a percentage of the original cost. A positive ROI means the investment earned more than it cost, while a negative ROI indicates a loss.
A good ROI depends on the type of investment and the level of risk involved. As a general benchmark, the S&P 500 stock index has historically averaged roughly 10% annual return before inflation. Real estate, bonds, and other asset classes each have their own typical ranges.
Total ROI measures the overall gain or loss over the entire investment period, regardless of how long it lasted. Annualized ROI normalizes the return to a per-year basis, making it easier to compare investments held for different lengths of time.
Yes, a negative ROI means you lost money on the investment. For example, if you invested $10,000 and received back only $8,000, your ROI would be -20%. Negative ROI is common in investments that carry risk, such as stocks or startups.
ROI does not account for the time value of money, investment risk, or opportunity cost. It also ignores factors like inflation, taxes, and transaction fees. For a more complete picture, consider using metrics like Net Present Value (NPV) or Internal Rate of Return (IRR).
You can improve ROI by reducing the cost of the investment, increasing the returns it generates, or both. Strategies include negotiating lower purchase prices, cutting operating expenses, improving efficiency, diversifying your portfolio, and choosing better timing for entry and exit.