APPROXIMATE WEIGHTS AND MEASURES
STANDARD WEIGHTS AND MEASURES
Length
12 inches = 1 foot
3 feet = 1 yard
5-1/2 yards = 16-1/2 feet
= 1 rod
1760 yards = 5280 feet
= 1 mile
Area
144 square inches = 1 square foot
9 square feet = 1 square yard
30-1/2 square yards = 1 square rod
160 square rods = 43,560 square ft. = 1 acre
640 acres = 17,878,400 sq. ft. = 1 sq. mile
1 circular inch = area of circle 1 inch in diameter
= 0.8754 square inch
1 square inch = 1.2732 circular inches
Volume
1728 cubic inches = 1 cubic foot
27 cubic feet = 1 cubic yard
1 cord wood = 128 cubic feet. One cord is 8 feet
long, 4 feet wide and 4 feet high.
1 board foot = 144 cubic inches
= volume of board 1 foot square and 1
inch thick.
1 cylindrical inch = volume of cylinder 1 inch in
diameter and 1 inch long
= 0.7854 cubic inch
1 cubic inch = 1.2732 cylindrical inches
Liquid or Fluid Measure
4 gills (16 fluid ounces) = 1 pint
2 pints = 1 quart
4 quarts = 1 gallon
31-11/32 gallons = 1 barrel (there is no standard
liquid ”barrel”)
1 U.S. gallon = 231 cubic inches
= 0.13373 cubic feet
7.4805 gallons = 1 cubic foot
When water is at its maximum density, 1 cubic foot weighs 62.428
pounds and 1 gallon weighs 8.345 pounds. For approximations, 1
cubic foot of water equals 7-1/2 gallons.
Dry Measure
2 pints = 1 quart
8 quarts = 1 peck
4 pecks = 1 bushel
1 U.S. bushel = 2150.42 cubic inches
= 1.22445 cubic feet
1 cubic yard = 21.7 U.S. bushels (approximate)
Measures of angles or arcs
60 seconds (in.) = 1 minute (ft.)
60 minutes (ft.) = 1 degree
90 degrees = 1 right angle or quadrant
360 degrees = 1 circle
Avoirdupois Weight (U.S.)
437.5 grains (16 drams) = 1 ounce
16 ounces = 1 pound
100 pounds = 1 hundred weight
2000 pounds = 1 ton
2240 pounds = 1 long ton
METRIC WEIGHTS AND MEASURES
Length
10 millimeters (mm.) = 1 centimeter
10 centimeters (cm.) = 1 decimeter
10 decimeters (dm.) = 100 centimeters = 1 meter
1000 meter (m.) = 1 kilometer (km.)
Area
100 square millimeters (sq. mm.)= 1 square centimeter
100 square centimeters (sq. cm.)= 1 square decimeter
100 square decimeters (sq. dm.) = 1 square meter
Volume
1000 cubic millimeters (cu. mm.) = 1 cubic centimeter
1000 cubic centimeters (cu. cm.) = 1 cubic decimeter
1000 cubic decimeters (cu. dm.) = 1 cubic meter
Capacity
10 millimeters (ml.) = 1 centiliter
10 centiliters (cl.) = 1 deciliter
10 deciliters (dl) = 100 centiliters = 1 liter
1000 liters (l.) = 1 kiloliter (kl.)
Weight
10 milligrams (mg.) = 1 centigram
10 centigrams (cg.) = 1 decigram
10 decigrams (dg.) = 100 centigrams = 1 gram
1000 grams (g.) = 1 kilogram
1000 kilograms (kg.) = 1 ton (metric)
