Customary Units

Length
1 (ft) = 12 (in.)
1 (yd) = 3 (ft)
= 36 (in.)
1 (mi) = 63,360 (in.)
= 5,280 (ft)
= 1,760 (yd)
= 320 (rods)
1 rod = 16.5 (ft)
= 5.5 (yd)

Area
1 (ft2) = 144 (in.2)
1 (yd2) = 9 (ft2)
1 (acre) = 43,560 (ft2)
1 (mi2) = 640 (acres)

Volume
1 (ft3) = 1,728 (in.3)
= 7.5 (gal)
= 0.8 (bu.)
1 (yd3) = 27 (ft3)
1 (gal) = 230.4 (in.3)

Capacity
1 (cup) = 8 (fl oz)
1 (pt) = 2 (cups)
1 (qt) = 2 (pints)
1 (gal) = 4 (qt.)
1 (pk) = 8 (qt.)
1 (bu.) = 4 (pk)

Weight/Mass
1 (lb) = 16 (oz)
1 ton (T) = 2,000 (lb)

 

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