Kilowatts to Foot-pounds Per Second (kW to ft⋅lbf/s)
1 kilowatt equals 737.5621493 foot-pounds per second (rounded).
How to convert kilowatts to foot-pounds per second
To convert kilowatts to foot-pounds per second, multiply the number of kilowatts by 737.5621493. The factor is rounded to 10 significant digits. To go the other way, multiply foot-pounds per second by 0.001355817948 (rounded).
foot-pounds per second = kilowatts × 737.5621493
Example: 10 kilowatts = 7,375.621493 foot-pounds per second.
Several different horsepower units exist. This site lists mechanical (745.7 W), metric (735.5 W) and electrical (746 W) horsepower separately.
About these units
Kilowatt (kW)
1,000 watts. Used for the power of motors, cars and household appliances.
A kilowatt is simply the watt with the SI prefix kilo, meaning a thousand, attached. The watt was adopted into the SI in 1960 and is small next to machinery, since an incandescent night light uses about 4 W, so the thousand-watt multiple suits engines, electric motors, tools and heaters. For readers used to older units, one kilowatt is roughly 1.34 horsepower.
Small electric heaters with a single element can use about 1 kW, and a domestic electric kettle or microwave oven draws a similar amount. The average household in the United States uses about 1 kW of electric power over time. On a clear midday near the equator, a square meter of Earth's surface receives about 1 kW of sunlight. Do not confuse the kilowatt with the kilowatt-hour on an electricity bill: the first is a rate, the second is the energy used by running one kilowatt for an hour, which equals 3,600,000 watt-seconds.
1 kilowatt = 1,000 watts (exactly).
Sources: Wikipedia: Kilowatt; Wikipedia: Orders of magnitude (power); BIPM: SI prefixes
Foot-pound Per Second (ft⋅lbf/s)
About 1.3558 watts. A horsepower is 550 of these.
Engineers in the English-speaking world measured work as force times distance, so a pound-force lifted through a foot became a foot-pound, and doing it each second gave the foot-pound per second. It is the base from which horsepower is built, since the imperial horsepower is defined as 550 foot-pounds per second, or 33,000 per minute, the figure fixed by James Watt and Matthew Boulton in 1783.
In SI terms one foot-pound per second is about 1.3558 watts, and NIST lists 1.355818 watts without marking it exact. The reverse is 1 watt equal to 0.7375621 foot-pounds per second. Multiplying 550 by 1.3558 gives about 745.7 watts, the usual value for a mechanical horsepower. The unit is rarely quoted on its own today, though it appears in older mechanics texts and in small-scale power estimates.
1 foot-pound per second = 1.355817948 watts (approximately).
Sources: Wikipedia: Horsepower; Wikipedia: Watt; NIST SP 811, Appendix B.8
Related conversions
- Foot-pounds per second to kilowatts (reverse)
- Kilowatts to watts
- Kilowatts to horsepower
- Kilowatts to megawatts
- Kilowatts to gigawatts
- Kilowatts to metric horsepower
- Kilowatts to BTU per hour
- Kilowatts to milliwatts
- Kilowatts to electrical horsepower
- Kilowatts to tons of refrigeration
- Kilowatts to kilocalories per hour
- Kilowatts to calories per second
- Kilowatts to ergs per second
- Watts to foot-pounds per second
- Horsepower to foot-pounds per second
See all power units.