1 mile = 1760 yards (yd) = 5280 feet (ft)

1 yard = 3 feet = 36 inches (in.) 1foot = 12 inches (in.)

1 mil = 0.001 inch (in.)

1 fathom = 2 yards (yd) = 6 feet (ft)

1 rod = 5.5 yards (yd) = 16.5 feet (ft)

1 hand = 4 inches (in.)

1span = 9 inches (in.)

1 micro-inch = one millionth inch or 0.000001 inch

(1 micrometer or micron one millionth meter = 0.00003937 inch).

1 mile = 8 furlongs = 80 chains

1 furlong = 10 chains = 220 yards

1 chain = 4 rods = 22 yards = 66 feet = 100 links

1 link = 7.92 inches

1 league = 3 nautical miles

1 nautical mile = 6076.11549 feet = 1.1508 statute miles

1 knot = nautical unit of speed = 1 nautical mile per hour

1 degree at the equator = 60 nautical miles = 69.047 statute miles

360 degrees = 21,600 nautical miles = 24,856.8 statute miles = circumference at equator.

1 square mile = 640 acres = 6400 square chains

1 acre = 10 square chains = 4840 square yards (yd ²) = 43,560 square feet (ft ²) An acre is equal to a square, the side of which is 208.7 feet (ft ²)

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