💹 NPV / IRR 计算器NPV & IRR Calculator
输入各期现金流，计算净现值（NPV）、内部收益率（IRR）和盈利指数。Calculate net present value (NPV), internal rate of return (IRR) and profitability index from cash flows.
使用说明与常见问题How-to & FAQ
「NPV / IRR 计算器」是什么？What is the NPV & IRR Calculator tool?
输入各期现金流，计算净现值（NPV）、内部收益率（IRR）和盈利指数。Calculate net present value (NPV), internal rate of return (IRR) and profitability index from cash flows.
如何使用「NPV / IRR 计算器」？How do I use the NPV & IRR Calculator tool?
在「NPV / IRR 计算器」中，填写「折现率%」、「现金流（第0期起，逗号分隔）」等参数，结果会随输入实时计算并显示在下方。In the NPV & IRR Calculator: Fill in "Discount rate %", "Cash flows from period 0 (comma separated)"; results are recalculated instantly as you type.
计算结果可以作为最终依据吗？Can I rely on the result?
「NPV / IRR 计算器」按标准公式计算，结果仅供参考；实际金额以银行、券商或税务机关的规则和四舍五入方式为准。The NPV & IRR Calculator uses standard formulas and is for estimation only; actual figures depend on your bank, broker or tax authority's rules and rounding.
「NPV / IRR 计算器」免费吗？需要注册吗？Is the NPV & IRR Calculator free? Do I need an account?
「NPV / IRR 计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The NPV & IRR Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.