如何计算Horsepower Converter

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Horsepower (hp) is a unit of power originally defined by James Watt to compare steam engine output to horse work. One mechanical horsepower = 745.7 watts. Metric horsepower (CV/PS) = 735.5 watts.

公式

1 HP = 745.7 W | HP = Torque(lb-ft) × RPM / 5252

HP: Horsepower (hp)
τ: Torque (lb-ft)
RPM: Revolutions Per Minute (rev/min)

分步指南

11 HP (mechanical) = 745.7 W
21 CV/PS (metric) = 735.5 W
3Power (W) = Torque (N·m) × Angular velocity (rad/s)
4kW = HP × 0.7457; HP = kW × 1.341

例题解析

输入

200 HP engine

结果

149.1 kW or 202.8 CV (metric horsepower)

输入

100 kW electric motor

结果

134.1 HP or 135.9 PS

常见问题

Why is it called "horsepower"?

James Watt coined the term by measuring how much work a horse could do. One horse could lift 550 pounds 1 foot in 1 second — that became the standard.

Is horsepower the same as torque?

No. Torque is rotational force. Horsepower is the rate at which work is done. A given torque at higher RPM produces more horsepower.

Why do cars list both torque and horsepower?

Torque determines acceleration at a given RPM. Horsepower determines top speed. Both matter for understanding engine performance.

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