The English System of Weights and
Measures
The United States is one of the few countries that still use this system of
measurement. Most countries use the Metric System of Measurement.
The United States is gradually converting some measurements to the Metric
system.
Linear Measure (Length)
 | 12 inches = 1 foot |
| 3 feet = 1 yard |
| 5,280 feet = 1 mile |
| 1,760 yards = 1 mile |
| 3 miles = 1 league |
Nautical Linear Measure
| 6 feet = 1 fathom |
| 120 fathoms = 1 cable's length (US Navy) |
| 10 cable's lengths = 1 nautical mile |
| 1 nautical mile = 6, 076.11549 feet |
| 1 nautical mile = 1.5 miles (approximately) |
| 60 nautical miles = 1 degree of a great circle of the
earth |
Square Measure (Area)
| 1 square foot = 144 square inches |
| 1 square yard = 9 square feet |
| 1 acre = 4, 840 square yards |
| 1 square mile = 640 acres |
Cubic Measure (Volume)
| 1 cubic foot = 1,728 cubic inches |
| 1 cubic yard = 27 cubic feet |
| 1 gallon (U.S.) = 231 cubic inches |
| 1 gallon (U.K.) = 277.27 cubic inches |
Liquid Measure
| 1 tablespoon = 3 teaspoons |
| 1 fluid ounce = 2 tablespoons |
| 1 cup = 8 fluid ounces |
| 1 pint = 2 cups |
| 1 quart = 2 pints |
| 1 gallon = 4 quarts |
Weight
| 1 pound = 16 ounces |
| 1 short ton (U.S.) = 2000 pounds |
| 1 long ton (U.K.) = 2, 240 pounds |
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