|
Conversion Factors |
|
Length |
Speed |
|
1 m=39.37 in.=3.281 ft
1 in.=2.54 cm
1 mi=5280 ft=1.609 km
1 m = 100 cm = 1000 mm = 106 mm
= 109 nm
1 km = 1000 m = 0.6214 mi
1 cm = 0.3937 in.
1 ft = 30.48 cm
1 yd = 91.44 cm
1 Å = 10-10 m = 10-8 cm = 10-1 nm
1 nautical mile = 6080 ft
1 light year = 9.461 x 1015 m |
1 km/h=0.278 m/s=0.621 mi/h
1 m/s=2.237 mi/h=3.281 ft/s
1 mi/h=1.61 km/h=0.447 m/s=1.47 ft/s
1 ft/s = 0.3048 m/s
1 mi/min = 60 mi/hr = 88 ft/s
1 mi/hr = 1.466 ft/s = 0.4470 m/s = 1.609 km/hr
1 furlong/fortnight = 1.662 x 10-4 m/s |
|
Mass |
Force |
|
1 kg=6.85 x 10-2 slug = 103 g
1 slug=14.59 kg
1 u=1.66 x 10-27
1 g = 6.85 x 10-5 slug
1 kg weights 2.205 lb when g = 9.80 m/s2 |
1 N=0.2248 lb=105 dynes
1 lb=4.448 N = 4.448 x 105dyn
1 dyne=10-5N=2.248 x 10-6 lb
|
|
Time |
Work and Energy |
|
1 min=60 s
1 h=3600 s
1 day=8.64 x 104 s
1 year=365 days |
1 J=107 erg=0.738 ft·lb=0.239 cal
1 cal=4.186 J
1 ft·lb=1.356 J
1 Btu=1.054 x 103 J=252 cal = 778 ft lb
1 J=6.24 x 1018 eV
1 eV=1.6 x 10-19
1 kWh=3.60 x 106 |
|
Volume |
Pressure |
|
1 liter=1000 cm3=3.53 x 10-2 ft3=10-3
m3=61.02 in3
1 ft3=0.02832 m3 = 28.32 liters = 7.447 gallons
1 gallon=3.786 liter=231 in.3 |
1 lb/in.2=6.895 x 103 N/m2
1 Pa = 1 N/m2 = 1.450 x 10-4 lb/in2 =
0.0209 lb/ft2
1 bar = 105 Pa
1 lb/ft2 = 47.88 Pa
1 atm = 1.012 x 105 Pa = 1.013 bar = 14.7 lb/in2 =
2117 lb/ft2
1 mm Hg = 1 torr = 133.3 Pa |
|
Angle |
Power |
|
180º=pi rad
1º=60 min=1.745 x 10-2 rad = p/180
rad
1 rad = 57.30° = 180° / 2 p
1 revolution = 360° = 2p
rad
1 rev/min (rpm) = 0.1047 rad/s |
1 hp=550 ft·lb/s=0.746 kW
1 W=1 J/s=0.738 ft·lb/s
1 Btu/hr = 0.294 W |
|
Area |
Acceleration |
|
1 cm2 = 0.155 in2
1 m2 = 104 cm2 = 10.76 ft2
1 in2 = 6.452 cm2
1 ft2 = 144 in2 = 0.0929 m2 |
1 m/s2 = 100 cm/s2 = 3.281 ft/s2
1 cm/s2 = 0.01 m/s2 = 0.03281 ft/s2
1 ft/s2 = 0.3048 m/s2 = 30.48 cm/s2 |
