unit of measure
conversions equivalences

italiano misure english measure
Conversion table
Conversion factors in PDF

unit of measure of the length (U.S.)

  inches links foots yards rods chains miles centimeters meters
inch 1 0.126263 0.083333 0.027777 0.005050 0.001262 0.000015 2.540005 0.0254
link 7.92 1 0.66 0.22 0.04 0.01 0.000125 20.11684 0.201168
foot 12 1.515152 1 0.333333 0.060606 0.015151 0.000189 30.48006 0.304800
yard 36 4.54545 3 1 0.181818 0.045454 0.000568 91.44018 0.914401
rod 198 25 16.5 5.5 1 0.25 0.003125 502.9210 5.029210
chain 792 100 66 22 4 1 0.0125 2011.684 20.11684
mile 63360 8000 5280 1760 320 80 1 160934.72 1609.3472
centimeter 0.3937 0.049709 0.032808 0.010936 0.001988 0.000497 0.000006 1 0.01
meter 39.37 4.970960 3.280833 1.093611 0.198838 0.049709 0.000621 100 1

1 inch (in.) = 25.4001 mm
1 foot (ft.) = 0.304801 m
1 yarde (yd.) = 0.914402 m
1 rod (rd.) = 5.02921 m
1 mile (mi.) = 1.609347 Km 		1 millimeter = 0.03937 in.
1 meter = 3.28083 ft.
1 meter = 1.093611 yd.
1 meter = 0.198838 rd.
1 Kilometer = 0.621370 mi.

List of the conversions compares with the units of 1 meter of the principal units of Anglo-Saxon and Italian measure (also not more in use)
angström (Å) = 1*10-10   point = 0.351459*10-3
light year = 9.46055*1015   punto (p) = 0.37606*10-3
bolt = 36.576   quadrimicron = 1*10-15
cable = 185.2   quintimicron = 1*10-18
chain = 30.48   saschen = 2.133562
cicero = 4.512*10-3   siriometer = 1.4959*1017
dalton = 1.650*10-27   skein = 109.728
ell = 1.143   span = 0.2286
fathom (fm) = 1.8288   trimicron = 1*10-12
fermi = 1*10-15   astronomical unit (u.a.) = 1.4959*1011
furlong (fur) = 201.1684   x unit (UX) = 1.00202*10-13
hand = 0.1016   varas = 0.848174
leaughe (marine) = 5.556*103   versta = 1066.781
line = 0.635*10-3   ximicron = 1*10-12
marine mile (intern.) = 1852      
knot = 1853.181      
pace = 0.0762      
parsec (pc) = 3.08374*1016      
perm (pm) = 1*10-4      
pica (em) = 4.21751*10 -3      

For calculate the astronomic distances they are used particular measures:

astronomical unit (U.A.) = medium distance earth-sun, correspondent to appr. 149 500 000 Km (are used in the measures of the solar system).

light year = distance covered from the light in a year (vel. light ~300 000 km to sec. that it corresponds to 9 million million km.). It is equivalent to 63 000 U.A., therefore 63 000 times the earth-sun distance.

parsec = 3,2558 light years. It is represented from the distance to which the beam of the orbit of the Earth (approximately the medium distance earth-sun) appears under an angle of 1 ".

ancient measures of Roman length

1 foot = 0.296 m
1 passus = 5 foot = 1.48 m
1 stadium = 125 passus = 185 m
1 mile = 8 stadium = 1480 m

nautical measures

6 foots = 1 fathom
100 fathoms = 1 cable length
6000 foot = 1 nautical mile

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