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🧫 pH 值计算器pH Calculator
由氢离子浓度 [H⁺]、氢氧根浓度 [OH⁻]、pH 或 pOH 中任意一个，计算其余值（25°C）。From [H⁺], [OH⁻], pH or pOH, calculate the others (at 25 °C).
使用说明与常见问题How-to & FAQ
「pH 值计算器」是什么？What is the pH Calculator?
由氢离子浓度 [H⁺]、氢氧根浓度 [OH⁻]、pH 或 pOH 中任意一个，计算其余值（25°C）。From [H⁺], [OH⁻], pH or pOH, calculate the others (at 25 °C).
如何使用「pH 值计算器」？How do I use the pH Calculator?
在「pH 值计算器」中，填写「数值」、「已知量」等参数，结果会随输入实时计算并显示在下方。In the pH Calculator: Fill in "Value", "Known"; results are recalculated instantly as you type.
计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?
「pH 值计算器」使用教科书标准公式，并列出所用公式和中间值，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 pH Calculator uses standard textbook formulas and shows them, which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「pH 值计算器」免费吗？需要注册吗？Is the pH Calculator free? Do I need an account?
「pH 值计算器」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 pH 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.