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ROI 计算器
根据初始金额和最终金额，快速计算投资回报率（ROI）及年化 ROI。
如何使用此工具
- 1在上方字段中输入您的数据。
- 2结果随输入实时更新。
- 3调整输入值以对比不同投资方案。
常见问题
ROI 的计算公式是什么？+
ROI =（最终价值 − 投入金额）÷ 投入金额 × 100。年化 ROI 在此基础上利用复利公式将持有期纳入计算。
这个计算器免费吗？+
完全免费，无需注册，所有计算均在浏览器本地运行，您的数据不会上传至服务器。
教程与深度解析
How to Calculate ROI: Formula, Annualized ROI and Examples
Learn how to calculate ROI with the exact formula, annualized ROI, marketing ROI, real estate ROI, worked examples, and common mistakes to avoid.
15-Year vs 30-Year Mortgage: Total Cost Compared
See exactly how much more a 30-year mortgage costs versus a 15-year on a $300k loan — monthly payments, total interest, and who should choose which.
FD vs RD vs SIP: Where Should Your Savings Go?
Compare Fixed Deposits, Recurring Deposits, and SIPs on returns, risk, liquidity, and tax. Real numbers, worked examples, and a clear decision framework for Indian savers.
How Inflation Eats Your Savings (and How to Beat It)
Learn how inflation silently halves your purchasing power, why nominal returns lie, and which asset classes consistently outpace rising prices over time.