500 hp to PS — 500 mechanical horsepower in metric horsepower
Exact 500 × 1.01387 = 506.934833
500 mechanical horsepower in other units
| Watts | 372,849.94 | W |
|---|---|---|
| Kilowatts | 372.849936 | kW |
| Megawatts | 0.37284994 | MW |
| Metric horsepower | 506.934833 | PS |
| BTU per hour | 1,272,216.79 | BTU/h |
| Foot-pounds per second | 275,000 | ft·lbf/s |
hp to PS at a glance
| Mechanical horsepower | Metric horsepower |
|---|---|
| 1 hp | 1.01387 PS |
| 2 hp | 2.027739 PS |
| 3 hp | 3.041609 PS |
| 5 hp | 5.069348 PS |
| 10 hp | 10.138697 PS |
| 20 hp | 20.277393 PS |
| 25 hp | 25.346742 PS |
| 50 hp | 50.693483 PS |
| 100 hp | 101.386967 PS |
| 250 hp | 253.467416 PS |
| 500 hp | 506.934833 PS |
| 1,000 hp | 1,013.87 PS |
How to convert mechanical horsepower to metric horsepower
Multiply by 1.01387 — one mechanical horsepower is 1.01387 metric horsepower. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 500 × 1.01387 = 506.934833
In words: about five hundred seven metric horsepower.
What these units are
The mechanical horsepower and the metric horsepower are covered in the power unit guide, along with every other unit on this page.
Questions
How many metric horsepower are in a mechanical horsepower?
One mechanical horsepower is 1.01387 metric horsepower. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 500 mechanical horsepower in metric horsepower?
500 mechanical horsepower is 506.934833 metric horsepower. The working is 500 × 1.01387 = 506.934833.
Why does the same car have two different horsepower figures?
Because there are two horsepowers. Metric horsepower, written PS or CV, is 735.49875 W; mechanical horsepower, written hp or bhp, is about 745.7 W. A car sold as 150 PS in Germany is 148 hp in Britain, and nothing about the engine has changed.
Where does 746 watts come from?
From James Watt, who needed to sell steam engines to people who owned horses. He measured a mill horse turning a wheel and settled on 550 foot-pounds per second — a figure most real horses cannot sustain, which made the comparison flattering to his engines.
How do I read an air conditioner's BTU rating?
BTU ratings are BTU per hour, a rate of heat movement, even when the "per hour" is dropped. A 12,000 BTU/h unit shifts about 3.5 kW of heat. That is not what it draws from the wall — a decent unit moves several times more heat than the electricity it consumes.
What is the difference between power and energy?
Power is a rate, energy is an amount. A kilowatt is how fast something uses energy; a kilowatt-hour is how much it used. A 2 kW heater running for three hours has a power of 2 kW throughout and has consumed 6 kWh. Bills are in energy; ratings are in power.