Return on investment (ROI) measures how efficiently money was used: net profit divided by cost. Enter what you spent and what you got back, and this page reports ROI as a percentage, the net profit, and the return multiple (revenue ÷ cost).
ROI does not account for time — doubling your money in one year and over twenty years both show 100% ROI. For time-aware comparisons, an annualized (CAGR) measure is the better tool.
Frequently asked questions
What is a good ROI?
It depends on the asset class; beating a benchmark like the S&P 500 (~10% annualized historically) is a common bar for active investments.
Can ROI be negative?
Yes — if revenue is below cost, ROI is negative, meaning the investment lost money.
What is the return multiple?
Revenue divided by cost: 2.0× means you got back twice what you put in.
中文说明
投资回报率（ROI）衡量资金使用效率：净利润除以成本。输入投入与回收金额，即可得到 ROI 百分比、净利润和回报倍数（收入 ÷ 成本）。
ROI 不考虑时间因素——一年翻倍和二十年翻倍的 ROI 都是 100%。若需要考虑时间的比较，年化收益率（CAGR）更合适。
常见问题
ROI 多少算好？
取决于资产类别；主动投资常见的基准是跑赢标普 500（历史年化约 10%）。
ROI 可以是负数吗？
可以。收入低于成本时 ROI 为负，表示亏损。
回报倍数是什么？
收入 ÷ 成本：2.0× 表示收回的金额是投入的两倍。