🔌 水力马力 ↔ 飞瓦Water horsepower to Femtowatt
水力马力与飞瓦互算（1 hp water = 7.46043e+17 fW）。本地换算，附常用相关单位。Convert water horsepower and femtowatt (1 hp water = 7.46043e+17 fW). Runs locally with related units.
点击任意一行可复制该结果；小于 0.0001 或不小于 10¹⁵ 的数值用 × 10ⁿ 科学计数法显示Click any row to copy that result. Values below 0.0001 or at least 10¹⁵ are shown in × 10ⁿ notation
使用说明与常见问题How-to & FAQ
「水力马力 ↔ 飞瓦」是什么？What is the Water horsepower to Femtowatt tool?
水力马力与飞瓦互算（1 hp water = 7.46043e+17 fW）。本地换算，附常用相关单位。Convert water horsepower and femtowatt (1 hp water = 7.46043e+17 fW). Runs locally with related units.
如何使用「水力马力 ↔ 飞瓦」？How do I use the Water horsepower to Femtowatt tool?
在「水力马力 ↔ 飞瓦」中输入数值并选择原单位，表格会同时列出换算到所有其他单位的结果，可一键复制。Enter a value in the Water horsepower to Femtowatt and choose the source unit; the table shows the value in every other unit at once, ready to copy.
1 水力马力等于多少飞瓦？How many femtowatt in 1 water horsepower?
1 hp water = 7.46043e+17 fW（按国际定义系数）。1 hp water = 7.46043e+17 fW (international definition).
如何把水力马力换算成飞瓦？How do I convert water horsepower to femtowatt?
结果 = 数值 × 7.46043e+17。例如 1.340405312e-18 hp water = 1 fW。result = value × 7.46043e+17. Example: 1.340405312e-18 hp water = 1 fW.
水力马力/飞瓦属于哪类单位？What kind of units are water horsepower/femtowatt?
二者同属「功率」量纲，可安全互算；也可打开「power-converter」做多单位对照。Both are power units; see also the power converter hub.
换算系数准确吗？Are the conversion factors exact?
「水力马力 ↔ 飞瓦」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Water horsepower to Femtowatt uses factors defined by the SI or other recognised standards and shows about 10 significant digits.
「水力马力 ↔ 飞瓦」免费吗？需要注册吗？Is the Water horsepower to Femtowatt free? Do I need an account?
「水力马力 ↔ 飞瓦」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 Water horsepower to Femtowatt is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.