Example:
15 ft·lb/min·ft² = 0.000455 hp/ft²
1 ft·lb/min·ft² = 0.00003 hp/ft² | 1 hp/ft² = 33000.000011 ft·lb/min·ft²
Conversion Steps:
15 × (0.243231716 / 8026.64661743) = 0.000454545