Inches.Feet.Yards.Rods.Fur’s.Mile.
12 inches = 1 foot.    12 =    1
 3 feet = 1 yard.    36 =    3 =    1
 5.5 yards = 1 rod.   198 =   16.5 =    5.5 =  1
40 rods = 1 furlong. 7,920 =  660 =  220 = 40 =1
 8 furlongs = 1 mile.63,360 =5,280 =1,760 =320 =8 =1
Surface—land
144 sq. inches = 1 square foot.Feet.Yards.Rods.Roods.Acres.
  9 square feet = 1 square yard.         9 =        1
 30.25 square yards = 1 square rod.       272.25 =       30.25 =      1
 40 square rods = 1 square rood.    10,890 =    1,210 =     40 =    1
  4 square roods = 1 acre.    43,560 =    4,840 =    160 =    4 =  1
640 acres = 1 square mile.27,878,400 =3,097,600 =102,400 =2,560 =640
Volume—liquid
4 gills = 1 pint.Gills.Pints.Gallon.Cub. In.
2 pints = 1 quart.32 =8 =1 =231
4 quarts = 1 gallon.
Fluid Measure
Gallon.Pints.Ounces.Drachms.Minims.Cubic Centimeters.
1 =8 =128 =1,024 =61,440 =3,785.435
1 =16 =128 =7,680 =473.179
1 =8 =480 =29.574
1 =60 =3.697

16 ounces, or a pint, is sometimes called a fluidpound.

Troy Weight
Pound.Ounces.Pennyweights.Grains.Grams.
1 =12 =240 =5,760 =373.24
1 =20 =480 =31.10
1 =24 =1.56