Conversion Factors

Length

1 kilometer (km)      =      1000 meters (m)

1 meter (m)      =      100 centimeter (cm)

1 centimeter (cm)      =      10-2m

1 millimeter (mm)      =      10-3m

1 micron (μ)      =      10-6

1 millimicron (mμ)      =      10-9m

1 angstrom (A)      =      10-10m

1 inch (in.)      =      2,540 cm

1 foot (ft)      =      30,48 cm

1 mile (mi)      =      1,609 km

1 mil      =      10-3 in.

1 centimeter      =      0,3937 in.

1 meter      =      39,37 in.

1 kilometer = 0,6214 mile

Area

1 square meter (m2)      =      10,76 ft2

1 square mile (mi2)      =      640 acres

1 square foot (ft2)      =      929 cm2

1 acre      =      43,560ft2

Volume

1 liter (l)      =      1000cm3      =      1,057 quart (qt)      =      61,02 in3      =      0,03532 ft3

1 cubic meter (m3)      =      1000 l      =      35,32 ft3

1 cubic foot (ft3)      =      7,481 U.S.gal      =      0,02832 m3      =      28,32 l

1 U.S. gallon (gal)      =      231 in3      =      3,785 l

1 British gallon      =      1,201 U.S.gallon      =      277,4 in3

Mass

1 kilogram (kg)      =      2,2046 pounds (lb)      =      0,06852 slug;

1 lb      =      453,6 gm      =      0,03108 slug

1 slug      =      32,174 lb      =     14,59 kg

Speed

1 km/h      =      0,2778 m/sec      =      0,6214 mi/h      =      0,9113 ft/sec

1mi/h      =      1,467 ft/sec      =      1,609 km/h      =      0,4470 m/sec

Density

1 gm/cm3      =      103 kg/m3      =      62,43 lb/ft3      =      1,940 slug/ft3

1 lb/ft3      =      0,01602 gm/cm3

1 slug/ft3      =      0,5154 gm/cm3

Force

1 newton (nt)      =      105 dynes      =      0,1020 kgwt      =      0,2248 lbwt

1 pound weight (lbwt)      =      4,448 nt      =      0,4536 kgwt      =     32,17 poundals

1 kilogram weight (kgwt)      =      2,205 lbwt      =      9,807 nt

1 U.S.short ton      =      2000 lbwt

1 long ton      =      2240 lbwt

1 metric ton      =      2205 lbwt

Energy

1 joule      =      1 nt      =      107 ergs      =      0,7376 ft lbwt      =      0,2389 cal      =      9,481 X 10-4 Btu

1 ft lbwt      =      1,356 joules      =      0,3239 cal      =      1,285 X 10-3 Btu

1 calorie (cal)      =      4,186 joules      =      3,087 ft lbwt      =      3,968 X 10-3 Btu

1 Btu (British thermal unit)      =      778 ft lbwt      =      1055 joules      =      0,293 watt h

1 kilowatt hour (kw h)      =      3,60 X 106 joules      =      860,0 kcal      =      3413 Btu

1 electron volt (ev)      =      1,602 X 10-19 joule

Power

1 watt      =      1 joule/sec      =      107 ergs/sec      =      0,2389 cal/sec

1 horsepower (hp)      =      550 ft lbwt/sec      =      33,000 ft lbwt /min      =      745,7 watts

1 kilowatt (kw)      =      1,341 hp      =      737,6 ft lbwt/sec      =      0,9483 Btu/sec

Pressure

1 nt/m2      =      10 dynes/cm2      =      9,869 X 10-6 atmosphere      =      2,089 X 10-2 lbwt/ft2

1 lbwt/in2      =      6895 nt/m2      =      5,171 cm mercury      =      27,68 in water

1 atmosphere (atm)      =      1,013 X 1015 nt/m2      =      1,013 X 1015 dynes/cm2      =      14,70 lbwt/in2      =      76 cm mercury      =      406,8 in.water

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