One unit equals to

Define here the size of the unit. This size is defined as a numerical multiple of a selected general unit. You can choose among these general units:

mm - millimeter

cm - centimeter

inch - 1 inch = 2.54 cm

ft - foot, 1 foot = 12 inches

yd - yard, 1 yard = 36 inches

m - meter, 1 m = 100 cm    

km - kilometer, 1 kilometer = 1000 m

mi - mile, 1 mile = 1609.344 m