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