Trip estimates

Horsepower Calculator

Calculate engine horsepower from torque and RPM, or convert between HP and kilowatts. Use this Travel and transport tool to enter your numbers, review the result, and understand the key assumptions before making the next decision.

What you get
A focused calculator, clear explanation, common questions, and useful next tools.
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Result
Explanation
Common questions
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How this calculator works
The result depends on the numbers you enter and the assumptions shown below.

Horsepower = (Torque × RPM) / 5252. This formula uses the standard relationship where 1 HP = 550 ft·lbf/s. To convert: 1 HP = 0.7457 kW.

Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.

Frequently asked questions

What is the difference between HP and kW?

1 horsepower (HP) = 0.7457 kilowatts (kW). The US uses HP while most of the world uses kW to measure engine power.