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💧 露点计算器Dew Point Calculator
由气温和相对湿度用 Magnus 公式计算露点温度，并给出体感舒适度提示。Calculate dew point from air temperature and relative humidity with the Magnus formula, plus a comfort hint.
使用说明与常见问题How-to & FAQ
「露点计算器」是什么？What is the Dew Point Calculator tool?
由气温和相对湿度用 Magnus 公式计算露点温度，并给出体感舒适度提示。Calculate dew point from air temperature and relative humidity with the Magnus formula, plus a comfort hint.
如何使用「露点计算器」？How do I use the Dew Point Calculator tool?
在「露点计算器」中，填写「气温」、「温度单位」、「相对湿度 %」等参数，结果会随输入实时计算并显示在下方。In the Dew Point Calculator: Fill in "Air temperature", "Unit", "Relative humidity %"; results are recalculated instantly as you type.
用的是哪个公式？Which formula is used?
Magnus 公式（Sonntag 1990 系数 b = 17.62，c = 243.12 °C），在 −45 至 60 °C 范围内误差约 ±0.35 °C。The Magnus formula with Sonntag (1990) coefficients b = 17.62, c = 243.12 °C; accurate to about ±0.35 °C between −45 and 60 °C.
计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?
「露点计算器」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Dew Point Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「露点计算器」免费吗？需要注册吗？Is the Dew Point Calculator free? Do I need an account?
「露点计算器」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 Dew Point 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.