Smart Financial Calculators

Make smarter money decisions with simple, fast tools. All calculations run in your browser — no signup needed.

Our Tools

Calculate how your money grows with compound interest. Forward & reverse modes — see what you'll have, or find the rate you need.

Plan your path to Financial Independence Retire Early. See when you can retire based on your savings rate and lifestyle.

Compare savings accounts, investment products, and retirement plans side-by-side with weighted scoring.

Find the optimal allocation across stocks, bonds, and cash to maximize returns for your risk tolerance.

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Run thousands of market scenarios to see the probability of reaching your investment goals.

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Compare Dollar-Cost Averaging, Value Averaging, and lump-sum investing strategies with real market data.

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Check how your funds move together. Build truly diversified portfolios with correlation analysis.

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Test trading and investment strategies against historical data before risking real money.

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从巴菲特案例到交互式增长曲线，拆解复利公式、72法则、税收与通胀影响——含免费在线计算器。

From Warren Buffett to interactive growth curves — master the Rule of 72, DCA, tax drag & the Fisher Equation. Free calculator included.