Length

The S I unit of length is the meter. To change any of these other units of length into their equivalent values in meters use the operation and conversion factor given. Those marked with * are exact.

angstroms		divide by 10 000 000 000 *
astronomical units	x 149 598 550 000
barleycorns		x 0.008 467
centimeters		x 0.01 *
chains  	        x 20.1168 *
cubits			x (0.45 to 0.5)
ells (UK)		x 0.875  
ems (pica)		x 0.004 233 3
fathoms			x 1.8288 *

feet (UK and US)	x 0.3048 *
feet (US survey)	x 0.304 800 609 6
furlongs		x 201.168 *
hands			x 0.1016 *
inches			x 0.0254 *
kilometers		x 1000 *
leagues			x (4000 to 5000)
light years		x 9 460 500 000 000 000
links (surveyors')	x 0.201 168 *

meters [m]		1

microns (=micrometers)	x 0.000 001 *
miles (UK and US)	x 1609.344 *
miles (nautical)	x 1852 *
parsecs			x 30 856 770 000 000 000
perch (=rods or poles)	x 5.0292 *
picas (computer)	x 0.004 233 333
picas (printers')	x 0.004 217 518
points (computer)	x 0.000 352 777 8
points (printers')	x 0.000 351 459 8
yards			x 0.9144 *