ROI formula
A common simple formula is (Final Value − Initial Cost) ÷ Initial Cost × 100. It expresses gain or loss relative to the starting cost.
Example
If an investment costs $2,000 and later has a value of $2,500, the gain is $500. The simple ROI is 25%.
Limitations
Simple ROI does not by itself account for time, taxes, financing, inflation or risk. Use it as a quick comparison rather than a complete investment analysis.
Use the ROI Calculator to test scenarios.
Quick answer
Calculate return on investment, profit and ROI percentage. Use the values and units shown by the tool, review the result, and keep the original inputs available if you need to compare another scenario.
Practical checklist
- Confirm the units, dates, rates or source values before calculating.
- Use consistent units and avoid rounding intermediate values too early.
- Run a second scenario when you need to understand how one input changes the result.
- For regulated fees, taxes, provider rules or professional decisions, verify the current official rule before relying on the result.
Try the related ToolViso tool
Use the ROI Calculator to check the calculation or conversion directly in your browser. No signup is required.
Frequently asked questions
Is ROI Calculator free to use?
Yes. The tool is available without signup or a paid account.
Does this tool work on mobile devices?
Yes. The interface is responsive and is designed to work in modern mobile and desktop browsers.
Can I use the result for official or financial decisions?
Use the result as a practical estimate. Confirm legally, financially or operationally important figures with the relevant official source, provider or professional.