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