How do you convert horsepower to BTU?

1 Btu/hour [I.T.] = 0.000 393 014 779 53 horsepower [international]

1 Btu/hour [I.T.] = 0.000 392 856 662 2 horsepower [electric]

1 Btu/hour [I.T.] = 0.000 398 465 762 18 horsepower [metric]

1 Btu/hour [I.T.] = 0.000 392 834 018 95 horsepower [water]