Return on Investment Calculator
Investment profit and return.
Enter your values in the interactive calculator to see an instant result. Calculations run in your browser, without an account.
Results are estimates for educational use; confirm important decisions with appropriate experts.
Formula • Worked example • Interpretation
Calculate return on investment (ROI)
ROI expresses profit relative to the starting investment. It is useful for straightforward comparisons but omits the time value of money.
Calculation method
Worked example
Investing $1,000 and realizing $1,200 with no additional costs produces $200 net gain and 20% ROI.
What your result means
A 20% return over one year is not equivalent to 20% over five years. Compare investment periods or use an annualized return model when possible.
Tips for better calculations
Include material transaction expenses when estimating your gain; otherwise ROI can overstate profitability.
Assumptions and limitations
ROI does not automatically account for taxes, interim cash flows, inflation, financing costs or risk. A zero initial investment makes the standard percentage formula undefined.
SiCalcs tools provide estimates and educational calculations; they do not replace professional financial, medical, tax, or legal advice.