Example:
15 Btu (th) = 0.005973 metric horsepower-hour
1 Btu (th) = 0.000398 metric horsepower-hour | 1 metric horsepower-hour = 2511.306018 Btu (th)
Conversion Steps:
15 × (1054.349999974 / 2647795.5) = 0.005972988