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