Length

British Length
  • 1 hand = 4 inches
  • 1 foot = 12 inches
  • 1 yard = 3 feet
  • 1 rod = 5.5 yards
  • 1 furlong = 40 rods
  • 1 mile = 5280 feet
  • 1 mile = 1760 yards
  • 1 mile = 80 chains
  • 1 mile = 8 furlongs
  • 1 league = 3 miles

  • 1 link = 7.92 inches
  • 1 rod = 25 links
  • 1 chain = 100 links
  • 1 chain = 66 feet
  • 1 chain = 22 yards
  • 1 chain = 4 rods
  • 1 furlong = 10 chains

U.S. Length
  • 1 foot = 12 inches
  • 1 yard = 3 feet
  • 1 rod = 5.5 yards
  • 1 mile = 320 rods

Nautical
  • 1 fathom = 6 feet
  • 1 shackle = 15 fathoms
  • 1 cable = 608 feet
  • 1 nautical mile = 10 cables
  • 1 nautical mile = 6080 feet

Metric
  • 1 kilometre = 10 hectometres
  • 1 hectometre = 10 dekametres
  • 1 dekametre = 10 metres
  • 1 metre = 10 decimetres
  • 1 decimetre = 10 centimetres
  • 1 centimetre = 10 millimetres