ROI Calculator
Calculate ROI to evaluate investment effectiveness
Input Parameters
Results
Enter data to see results
FAQ
What is ROI? How to calculate Return on Investment?
ROI (Return on Investment) is a key metric for measuring the profitability of an investment.
公式：ROI = (收益 - 成本) / 成本 × 100%
例如投資 100 萬元，最終回收 150 萬元，ROI = (150-100)/100 × 100% = 50%。
What is annualized ROI? How is it different from ROI?
Annualized ROI takes the investment period into account, reflecting the average annual return. It is better for comparing investments with different time horizons.
公式：年化 ROI = ((收益/成本)^(1/年數) - 1) × 100%
What is a good ROI for an investment?
年化 ROI 超過 7-10% 通常可視為優良投資（美股 S&P 500 長期年化約 10%）。
銀行定存約 1-2%，債券基金約 3-5%，房地產約 3-8%。需綜合考量風險與通膨因素。
What types of investments can this ROI calculator be used for?
This ROI calculator works for all investment types: stocks, mutual funds, ETFs, real estate, fixed deposits, bonds, business investments, and marketing campaigns. Simply enter your investment cost and total returns.
ROI Reference Information
ROI Formula
ROI = (Returns - Cost) / Cost × 100%
Annualized ROI = ((Returns / Cost)^(1/Number of Years) - 1) × 100%
Common Investment Return Reference
Financial Disclaimer
The results of this tool are for reference only and do not constitute investment advice. Actual values may vary due to financial institution policies, interest rate changes, and individual circumstances. Please consult a professional financial advisor before making any financial decisions.