answered 8/26/2009 How To Convert Horse Power To KW? To convert a horse power (HP) into Kilowatts (kW) simply multiply the horse power by 0.746 HP x 0.746 = kW and To convert Kilowatts (kW) into a horse power (HP) simply multiply the Kilowatts by 1.34 kW x 1.34 = HP