Common Power & Energy Conversions

Power:

1 W = 1 J/s = 3.413 Btu/hr

1 kW = 3413 Btu/hr = 1.341 hp

1 hp = 550 ft-lb/s = 2544.433 Btu/hr = 745.7 W

1 Btu/hr = 0.293 W = 0.000393 hp

1 Btu/min = 17.5912 W = 0.02359 hp

Energy:

1 kWh = 3.6 MJ = 3413 Btu

1 hp = 178.23 Cal/sec = 10693.8 Cal/min

1 J = 0.0002778 Wh = 0.239 cal

1 Btu = 1055.06 J = 0.293 Wh