10 ft·lbf/s to hp — 10 foot-pounds per second in mechanical horsepower
Exact 10 ÷ 550 = 0.01818182
10 foot-pounds per second in other units
| Watts | 13.558179 | W |
|---|---|---|
| Kilowatts | 0.01355818 | kW |
| Megawatts | 0.000013558179 | MW |
| Mechanical horsepower | 0.01818182 | hp |
| Metric horsepower | 0.01843399 | PS |
| BTU per hour | 46.262429 | BTU/h |
ft·lbf/s to hp at a glance
| Foot-pounds per second | Mechanical horsepower |
|---|---|
| 1 ft·lbf/s | 0.001818181818 hp |
| 2 ft·lbf/s | 0.003636363636 hp |
| 3 ft·lbf/s | 0.005454545455 hp |
| 5 ft·lbf/s | 0.009090909091 hp |
| 10 ft·lbf/s | 0.01818182 hp |
| 20 ft·lbf/s | 0.03636364 hp |
| 25 ft·lbf/s | 0.04545455 hp |
| 50 ft·lbf/s | 0.09090909 hp |
| 100 ft·lbf/s | 0.18181818 hp |
| 250 ft·lbf/s | 0.45454545 hp |
| 500 ft·lbf/s | 0.90909091 hp |
| 1,000 ft·lbf/s | 1.818182 hp |
How to convert foot-pounds per second to mechanical horsepower
Multiply by 0.001818181818 — one foot-pound per second is 0.001818181818 mechanical 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 10 ÷ 550 = 0.01818182
What these units are
The foot-pound per second and the mechanical horsepower are covered in the power unit guide, along with every other unit on this page.
Questions
How many mechanical horsepower are in a foot-pound per second?
One foot-pound per second is 0.001818181818 mechanical horsepower. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 10 foot-pounds per second in mechanical horsepower?
10 foot-pounds per second is 0.01818182 mechanical horsepower. The working is 10 ÷ 550 = 0.01818182.
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.