DIMENSIONAL CONVERSIONS

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  Length
1 m = 3.2808 ft = 39.37 in
1 cm = 10-2 m = .394 in = .0328 ft
1 mm = 10-3 m
1 m = 10-6 m
1 A = 10-10 m
1 km = .621 mi
1 mi = 5280 ft

 
  Area
1 m2 = 10.76 ft2
1 cm2 = 10-4 m2 = .155 in2

 
  Volume
1 gal = .13368 ft3 = 3.785 liters
1 liter = 10-3 m3

 
  Time
1 h = 3600 s = 60 min
1 ms = 10-3 s
1 s = 10-6 s
1 ns = 10-9 s

 
  Mass
1 kg = 1000 g = 2.2046 lbm = 6.8521 * 10-2 slug
1 slug = 1 lbf s2 / ft = 32.174 lbm

 
  Temperature
F = {(9 / 5) * C} + 32
C = (5 / 9) * ( F - 32)
R = F + 459.69

 
  Force
1 N = 1 kg m / s2
1 dyn =  1 g cm / s2
1 lbf = 4.448 * 10-5 dyn = 4.448 N

 
  Energy
1 J = 1 kg m2 / s2
1 Btu = 778.16 ft lbf = 1.055 * 1010 ergs = 252 cal = 1055.0 J
1 cal = 4.186 J
1 kcal = 4186 J = 1000 cal
1 erg = 1 g cm2 / s2 = 10-7 J
1 eV = 1.602 * 10-19 J
1 Q = 1018 Btu = 1.055 * 1021 J
1 Quad = 1015 Btu
1 kJ = .947813 Btu = .23884 kcal

 
  Power
1 W = 1 kg m2 / s3 = 1 J / s
1 hp = 550 ft lbf / s = 2545 Btu / h = 746 W
1 kW = 1000 W = 3412 Btu / h

 
  Pressure
1 atm = 14.696 lbf / in2 = 760 torr = 101325 N / m2
1 mm Hg = .01934 lbf / in2 = 1 torr
1 dyn / cm2 = 145.04 * 10-7 lbf / in2
1 bar = 105 N / m2 = 14.504 lbf / in2 = 106 dyn / cm2
1 = 10-6 m Hg = 10-3 mm Hg
1 Pa = 1 N / m2 = 1.4504 * 10-4 lbf / in2
1 in Hg = 3376.8 N / m2
1 in H2O = 248.8 N / m2


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