About the ROI Calculator
Compare investment proceeds against the initial and additional costs that you choose to include.
Formula or method
Net return = proceeds − (initial cost + additional costs). ROI percentage = net return ÷ total invested × 100.
Worked example
If initial cost is 500, additional costs are 50 and final proceeds are 750, net return is 200 and ROI is approximately 36.36%.
How to use the tool
Start with the example values above, then replace each input with your own figures. The results update immediately. Review the units, denominators, and assumptions before using any number in an important decision.
Assumptions and limitations
ROI alone does not account for time, risk, inflation or cash-flow timing. For returns over different durations, annualized return is a separate measurement.
Frequently asked questions
Can I compare ROI values over different time periods directly?
Not fairly without considering their durations and risk profiles. A one-month return and a five-year return may require annualization.
Privacy and support
Your inputs are processed locally in your browser. ToolMosaic does not upload or store the values you enter in this tool. Our tools are free, and we appreciate your support.