E1FC 09/10/2010
14:33:4 Page 11
CONVERSION FACTORS
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MASS
1 lb m ¼ 0.4536 kg
1 slug ¼ 14.5939 kg
LENGTH
1 inch ¼ 0.0254 m
1 ft ¼ 0.3048 m
1 km ¼ 1000 m ¼ 1 Â 10
3 m
1 cm ¼ 0.01 m ¼ 0.3937 in. ¼ 0.0328 ft
1 mm ¼ 0.001 m ¼ 1 Â 10
À3 m
1 mm ¼ 0.000001 m ¼ 1 Â 10
À6 m
1 nm ¼ 0.000000001 m ¼ 1 Â 10
À9 m
1 mi ¼ 5280 ft ¼ 1.6093 km
1 l.y. ¼ 9.4605 Â 10
15 m
AREA
1 ft
2
¼ 0.0929 m
2
1 cm
2
¼ 1 Â 10
À4 m
2
¼ 0.155 in.
2
VOLUME
1 L ¼ 1000 cm
3
¼ 0.2642 gal ¼ 1 Â 10
À3 m
3
1 gal ¼ 231.0 in.
3
¼ 0.1337 ft
3
1 gal ¼ 3.7854 L ¼ 0.003785 m
3
1 ft
3 ¼ 28.3168 L ¼ 0.0283 m
3
TIME
1 min ¼ 60 s
1 h ¼ 60 min ¼ 3600 s
1 day ¼ 8.640 Â 10
4 s
FORCE
1 N ¼ 1 kg-m/s
2
¼ 1 Â 10
5 dynes
1 lb ¼ 4.4482 N
1 kg f ¼ 9.8067 N
PRESSURE OR STRESS
1 Pa
¼ 1 N/m
2
1 lb/in
2
¼ 6894.757 Pa
1 atm
¼ 14.6959 lb/in.
2
¼ 760 Torr
¼ 101,325 Pa
1 bar
¼ 14.5038 lb/in.
2
¼ 1 Â 10
5 Pa
¼ 750 Torr
1 dyn/cm
2
¼ 0.10 Pa
1 inch Hg ¼ 3386.388 N/m
2
1 inch H 2 O ¼ 2.54 cm H 2 O ¼ 249.089 Pa
¼ 0.0361 lb/in.
2
1 Torr
¼ 1 mm Hg ¼ 133.322 Pa
1 mstrain ¼ 10
À6 m/m ¼ 10
À6 in/in
TEMPERATURE
K ¼
C + 273.15
1
C ¼ 1.8
F ¼ 1 K
F ¼ 1.8
C + 32
R ¼
F + 459.67
VOLUME FLOW RATE
1 gal/min ¼ 0.00223 ft
3 /s ¼ 0.06309 L/s
1 m
3 /min ¼ 35.315 ft
3 /min ¼ 1 Â 10
6 cm
3 /min
ANGLE
1
¼ 0.01745 rad
1
0
¼ 2.909 Â 10
À4 rad
1 rad ¼ 0.1592 revolutions
ROTATION
1 rev/s ¼ 2p rad/s ¼ 6.2832 rad/s
1 rpm ¼ 1 rev/min ¼ 0.1047 rad/s
FREQUENCY
1 Hz ¼ 2p rad/s
à Many of these conversion factors have been rounded off.