Conversion Factors Acceleration 1 m/s2 = 3.2808 ft/s2 1 ft/s2 = 0.3048 m/s2 Area 1 cm2 = 0.155 in2 1 m2 = 10.764 ft2 1 in2 = 6.4516 cm2 1 ft2 = 0.092903 m2 Density 1 g/cm3 = 62.43 lbm /ft3 1 kg/m3 = 0.06243 lbm /ft3 1 lbm /ft3 = 0.016019 g/cm3 1 lbm /ft3 = 16.019 kg/m3 Energy 1 J = 0.7376 ft lb f 1 J = 9.478×10−4 Btu 1 J = 2.778×10−7 kW hr 1 J = 107 ergs 1 J = 0.2390 cal 1 ft lb f = 1.3558 J 1 Btu = 1055.0 J = 778.1 ft lb f 1 kW hr = 3.600×106 J 1 hp s = 550 ft lb f Force 1 N = 0.22481 lb f 1 N = 105 dynes 1 lb f = 4.4482 N Length 1 cm = 0.3937 in 1 m = 3.2808 ft 1 km = 0.6214 mi (statute) 1 km = 0.5400 nmi (nautical) 1 in = 2.540 cm 1 ft = 12 in = 0.3048 m 1 yd = 3 ft 1 mi (statute) = 1609 m = 5280 ft 1 nmi (nautical) = 1.8520 km Mass 1 g = 0.03527 oz 1 oz = 28.35 g 1 kg = 2.2046 lbm 1 lbm = 16 oz = 453.6 g 1 metric ton = 1000 kg = 2205 lbm 1 ton = 2000 lbm = 907.2 kg Power 1 W = 0.7376 ft lb f /s 1 W = 9.478×10−4 Btu/s 1 W = 1.341×10−3 hp 1 ft lb f /s = 1.3558 W 1 Btu/s = 1055.0 W = 778.1 ft lb f /s 1 hp = 745.7 W = 550 ft lb f /s Pressure 1 Pa = 1.450×10−4 lb f /in2 (psi) 1 Torr = 1 mm Hg (@ 0◦C) 1 lb f /in2 = 6894.8 Pa 1 atm = 101,325 Pa 1 atm = 760 mm Hg (@ 0◦C) 1 atm = 14.696 lb f /in2 (psi) 1 atm = 33.9 ft H2 O (@ 4◦C) I bar = Ibar Temperature Viscosity Volume Volume Flow = 1750 . o6 l torn , 14 5038 psia . 11gtm = 185ㆍ J T(◦C) = 5/9 [T(◦ F) − 32] T(K) = T(◦C) + 273.15 T(◦ F) = 1.8 T(◦C) + 32 T(R) = T(◦ F) + 459.67 T(R) = 1.80 T(K) 1 cp = 6.7197×10−4 lbm /ft s 1 lbm /ft s = 1488.2 cp = 14.882 Poise 1 cm3 = 1 mL = 0.06102 in3 1 m3 = 35.3145 ft3 1 m3 = 1000 liters 1 m3 = 264.17 gal 1 L = 0.26417 gal 1 in3 = 16.387 cm3 1 ft3 = 0.028317 m3 1 ft3 = 7.4805 gal 1 ft3 = 28.317 liters 1 gal = 3.785×10−3 m3 = 3.785 L 1 m3 /s = 15,850 gal/min 1 gal/min = 6.309×10−5 m3 /s 1 gal/min = 2.228×10−3 ft3 /s 1 ft3 /s = 448.8 gal/min 42 ga 1 = 1 b kha cm 2 니 ten pf xix