Business calculators
ROI Calculator
Compare an investment's net profit with the amount originally invested. Your inputs stay in this browser.
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What this calculator measures
ROI compares net profit with investment cost. It is a compact historical comparison, not a forecast or risk measure.
Formula
ROI % = ((Return Value - Investment Cost) / Investment Cost) x 100
Worked example
- 1A $10,000 investment returns $15,000.
- 2Net profit is $5,000, so ROI is $5,000 / $10,000 x 100 = 50%.
How to interpret the result
Compare ROI over similar time periods and include all material costs before judging alternatives.
Common mistakes and limits
- Ignoring time, financing, fees, or risk; comparing a one-month return with a multi-year return.
Frequently asked questions
Can ROI be negative?
Yes, when return value is below investment cost.
Is ROI annualized?
No. This simple result has no time adjustment.
Is ROI the same as ROAS?
No. ROI uses profit; ROAS divides attributed ad revenue by ad spend.