This calculator allows you to convert from Horsepower (boiler) to Kilojoule/hour and in a reverse direction. To convert from Horsepower (boiler) to Kilojoule/hour, enter the amount of Horsepower (boiler) into the first input and to convert from Kilojoule/hour to Horsepower (boiler), enter the amount of Kilojoule/hour into the second input.