Return on investmentLive calculation
Return on investment
Free ROI calculator
Calculate in your browser
Enter an initial investment and final value to calculate net return, ROI percentage and the value returned for each dollar invested.
Free, no sign-up, and the entered values stay in your browser.
Formula
How the calculation works
Enter an initial investment and final value to calculate net return, ROI percentage and the value returned for each dollar invested.
ROI % = (final value − initial investment) ÷ initial investment × 100.ROI is a simple comparison and does not account for time, financing, taxes, inflation or risk. Use a cash-flow analysis for more complex decisions.
Use the result
Move from calculation to a customer document.
Confirm the measurements, rates, tax treatment and project scope before relying on an estimate. Keep the calculation with the customer record, then place the verified figures in an itemized estimate, quote or invoice.
These browser calculations support planning and pricing. They do not replace field measurements, supplier quotations, payroll, accounting, tax, lending or professional advice.
Frequently asked questions
Questions about free roi calculator
What does a positive ROI mean?
A positive result means the entered final value is greater than the initial investment. It does not by itself show whether the return was earned quickly or with acceptable risk.
Can ROI be negative?
Yes. When final value is below the initial investment, the net return and ROI percentage are negative.
Should revenue or profit be used as final value?
Use consistent cash-flow definitions. For business analysis, final value should reflect the benefit being compared with the full investment cost, not an unrelated gross revenue figure.
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