Help System (web edition)

Conversion of lengths:
Examples:
  1000(m:km)=1  (meter:mm)=1000  100(cm:dekameter)=0.1
  (megameter:m)=1000000 (picometer:mm)=0.000000001 (exam:attom)=1e+036
  (inch:cm)=2.54  (foot:inch)=12  (yard:foot)=3
  (furlong:yard)=220  (rod:m)=5.0292
  (Ångström:mm)=0.000001

  M = More information on physical measures