📊 投资回报分析

📐 计算公式与说明

总 ROI 总 ROI = (最终价值 − 初始投资) ÷ 初始投资 × 100%
年化 ROI(复合增长率) 年化 ROI = [(最终价值 ÷ 初始投资) ^ (1 ÷ 持有年数) − 1] × 100%
回本周期(月) 回本周期 = 初始投资 ÷ 每月净收益(若每月净收益 > 0)
演算示例(10万投资,3年后价值13.5万) 总 ROI = (135,000 − 100,000) ÷ 100,000 × 100% = 35.00%
年化 ROI = (1.35 ^ (1/3) − 1) × 100% ≈ 10.52%
若每月净收益 2,000元,回本周期 = 100,000 ÷ 2,000 = 50 个月

📌 年化ROI和总ROI有什么区别?

总ROI反映整个持有期的总回报率,年化ROI把它折算成每年复利增长的速度。例如3年赚35%,年化约10.52%——这才是可以和银行利率对比的“年化收益率”。

📌 什么投资可以用这个计算器?

股票、基金、房产、开店、项目投资……只要您能预估初始投入和未来回收价值,都可以用。回本周期模块特别适合租金、生意等有稳定月现金流的投资。

📌 中美回报计算有什么不同?

计算逻辑全球通用。中国投资者喜欢看“总回报率”,美国投资者更习惯看“年化回报率 (CAGR)”。本计算器同时提供这两个数字,并使用您输入的货币符号(¥ / $)。

📊 Investment Analysis

📐 Formulas & Notes

Total ROI Total ROI = (Final Value − Initial Investment) ÷ Initial Investment × 100%
Annualized ROI (CAGR) Annualized ROI = [(Final Value ÷ Initial Investment) ^ (1 ÷ Years) − 1] × 100%
Payback Period (months) Payback = Initial Investment ÷ Monthly Net Cash Flow (if > 0)
Example ($100k investment, $135k after 3 years) Total ROI = (135,000 − 100,000) ÷ 100,000 = 35.00%
Annualized ROI = (1.35 ^ (1/3) − 1) ≈ 10.52%
With $2,000 monthly net income, payback = 100,000 ÷ 2,000 = 50 months

📌 Total ROI vs Annualized ROI?

Total ROI shows overall return; annualized ROI (CAGR) smooths it into a yearly rate. A 50% return over 5 years is about 8.45% annually — a fairer comparison against bank interest.

📌 What can I calculate with this tool?

Stocks, real estate, business projects, rental properties — any scenario with a known initial cost and expected future value. The payback module is great for steady cash-flow investments.