Example:
15 horsepower (550 ft·lbf/s) = 1.11855e+22 aW
1 horsepower (550 ft·lbf/s) = 7.456999e+20 aW | 1 aW = 1.341022e-21 horsepower (550 ft·lbf/s)
Conversion Steps:
15 × (745.699871582 / 1e-18) = 1.11855e+22