📈 ROI Calculator
Return on Investment for any expense
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Understanding ROI
ROI = (Gain - Cost) / Cost × 100. A $10,000 investment that returns $15,000 has a 50% ROI. Simple and universal — works for stocks, real estate, business investments, marketing campaigns, education, and any expense that generates a return. Annualized ROI accounts for time: a 50% return over 3 years is approximately 14.5% per year, while 50% over 1 year is exactly 50% per year.