⚡ 功率重量比计算器（汽车、摩托车、骑行 W/kg）Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg)

使用说明与常见问题How-to & FAQ

「功率重量比计算器（汽车、摩托车、骑行 W/kg）」是什么？What is the Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) tool?

输入功率（W、kW、hp 或 PS）和质量（kg 或 lb），计算功率重量比：W/kg、kW/t、hp/吨、每马力承担的重量 kg/hp 和 lb/hp。车辆可选择是否加上驾驶员体重；骑行时可以直接用 FTP 和体重得到 W/kg。本地处理。Enter power (W, kW, hp or PS) and mass (kg or lb) to get the power-to-weight ratio as W/kg, kW/t and hp per tonne, plus the weight per horsepower in kg/hp and lb/hp. Add a driver for vehicles, or use FTP and body weight for cycling W/kg. Processed locally.

如何使用「功率重量比计算器（汽车、摩托车、骑行 W/kg）」？How do I use the Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) tool?

在「功率重量比计算器（汽车、摩托车、骑行 W/kg）」中，填写「功率」、「功率单位」、「质量」、「质量单位」、「驾驶员或骑手体重（可选，同单位）」等参数，结果会随输入实时计算并显示在下方。In the Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg): Fill in "Power", "Power unit", "Mass", "Mass unit", "Driver or rider weight (optional, same unit)"; results are recalculated instantly as you type.

功率重量比怎么算？How is power-to-weight calculated?

功率重量比 = 功率 ÷ 质量。数值越大，加速越快、爬坡越轻松。1 W/kg = 1 kW/t。Power-to-weight = power / mass; the higher it is, the faster the acceleration and the easier the climbs. 1 W/kg equals 1 kW/t.

hp 和 PS 有什么区别？How do hp and PS differ?

英制机械马力 1 hp ≈ 745.7 W，公制马力 1 PS ≈ 735.5 W，1 PS ≈ 0.986 hp。欧洲车常用 PS，美国常用 hp。A mechanical horsepower is about 745.7 W and a metric PS about 735.5 W, so 1 PS ≈ 0.986 hp. European cars often quote PS, American ones hp.

骑行的 W/kg 怎么用？How is W/kg used in cycling?

用功能阈值功率 (FTP) 除以体重，衡量爬坡能力。业余爱好者约 2–3.5 W/kg，职业车手可达 5–6.5 W/kg。Divide your functional threshold power (FTP) by body weight to gauge climbing ability. Amateurs are about 2–3.5 W/kg and professionals 5–6.5 W/kg.

能举个计算实例吗？Can you show a worked example?

例如在「功率重量比计算器（汽车、摩托车、骑行 W/kg）」中填 功率 = 150000，功率单位 = W，质量 = 1500，质量单位 = kg，结果区显示：功率重量比：100 W/kg；100 kW/t = 134.1022 hp/吨；每马力重量：7.457 kg/hp = 16.4399 lb/hp；计算用质量：1,500 kg；功率：150 kW = 201.1533 hp；ℹ 汽车参考：普通家用车约 50–90 kW/t，性能车 150–300 kW/t 以上。For example, entering Power = 150000, Power unit = W, Mass = 1500, Mass unit = kg in the Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) gives: Power-to-weight: 100 W/kg; 100 kW/t = 134.1022 hp per tonne; Weight per horsepower: 7.457 kg/hp = 16.4399 lb/hp; Mass used: 1,500 kg; Power: 150 kW = 201.1533 hp; ℹ Car guide: family cars are about 50–90 kW/t and performance cars 150–300 kW/t or more.

哪些输入会被检查？Which inputs are validated?

「功率重量比计算器（汽车、摩托车、骑行 W/kg）」会检查这些输入——「功率」、「质量」：必须填写，须大于 0；「驾驶员或骑手体重（可选，同单位）」：不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) checks its inputs — "Power", "Mass": required, must be greater than 0; "Driver or rider weight (optional, same unit)": cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「功率重量比计算器（汽车、摩托车、骑行 W/kg）」的设置：「功率」默认 150；「功率单位」可选 W、kW、hp（英制马力）、PS（公制马力）（默认 kW）；「质量」默认 1500；「质量单位」可选 kg、lb（默认 kg）；「驾驶员或骑手体重（可选，同单位）」可留空。每次生成结果都按当前设置处理。Settings in the Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) — "Power" default 150; "Power unit": W, kW, hp (mechanical), PS (metric) (default kW); "Mass" default 1500; "Mass unit": kg, lb (default kg); "Driver or rider weight (optional, same unit)" optional. The result always uses the current settings.

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

「功率重量比计算器（汽车、摩托车、骑行 W/kg）」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 Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) 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.

「功率重量比计算器（汽车、摩托车、骑行 W/kg）」免费吗？需要注册吗？Is the Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) free? Do I need an account?

「功率重量比计算器（汽车、摩托车、骑行 W/kg）」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 Power-to-Weight Ratio Calculator (Cars, Motorbikes, Cycling W/kg) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.