🔧 扭矩计算器Torque Calculator

使用说明与常见问题How-to & FAQ

「扭矩计算器」是什么？What is the Torque Calculator tool?

由力、力臂长度和夹角计算扭矩 τ = r·F·sinθ，结果同时给出 N·m、lb·ft 和 kgf·m。Torque τ = r·F·sinθ from force, lever arm and angle, shown in N·m, lb·ft and kgf·m.

如何使用「扭矩计算器」？How do I use the Torque Calculator tool?

在「扭矩计算器」中，填写「力 F」、「力的单位」、「力臂 r」、「长度单位」、「夹角 θ (°)」等参数，结果会随输入实时计算并显示在下方。In the Torque Calculator: Fill in "Force F", "Force unit", "Lever arm r", "Length unit", "Angle θ (°)"; results are recalculated instantly as you type.

切换单位后结果为什么没变？Why doesn't the result change when I switch units?

切换力或长度单位时，已输入的数值会自动换算成新单位（如 1 m 变为 100 cm），表示的仍是同一个物理量，所以扭矩不变；如果想按新单位重新输入，直接修改数值即可，结果会立即重算。When you switch the force or length unit, the number you entered is converted to the new unit (1 m becomes 100 cm), so it is still the same physical quantity and the torque stays the same. To enter a new value in the new unit, just edit the number — the result recalculates immediately.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「扭矩计算器」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 Torque 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.

「扭矩计算器」免费吗？需要注册吗？Is the Torque Calculator free? Do I need an account?

「扭矩计算器」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 Torque 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.