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| United States Unit of Measure |
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| United States Units of Measure
| Linear Measure |
| 12 inches |
= |
1 foot |
| 3 feet |
= |
1 yard |
| 5 1/2 yard |
= |
1 rod |
| 40 rod |
= |
1 furlong |
| 8 furlongs (5280 ft) |
= |
1 statute mile |
| Mariners' Measure |
| 6 feet |
= |
1 fathom |
1000 fathoms (approx.)
(see Misc. Measure) |
= |
1 nautical mile |
| 3 nautical miles |
= |
1 league |
|
Square Measure |
| 144 square inches |
= |
1 square foot |
| 9 square feet |
= |
1 square yard |
| 30.25 square yards |
= |
1 square rod |
| 160 square rods |
= |
1 acre |
| 640 square acres |
= |
1 square mile |
| Cubic Measure |
| 1728 cubic inches |
= |
1 cubic foot |
| 27 cubic feet |
= |
1 cubic yard |
| Surveyors' Measure |
| 7.92 inches |
= |
1 link |
| 100 links |
= |
1 chain |
| Liquid Measure |
| 4 gills |
= |
1 pint |
| 2 cups |
= |
1 pint |
| 2 pints |
= |
1 quart |
| 4 quarts |
= |
1 gallon |
| 31.5 gallons |
= |
1 barrel |
| 2 barrel |
= |
1 hogshead |
| Apothecaries' Fluid Measure |
| 60 minims |
= |
1 fluid dram |
| 8 fluid drams |
= |
1 fluid ounce |
| 16 fluid ounces |
= |
1 pint |
| 2 pints |
= |
1 quart |
| 4 quarts |
= |
1 gallon |
| Dry Measure |
| 2 pints |
= |
1 quart |
| 8 quarts |
= |
1 peck |
| 4 peck |
= |
1 bushel |
| Wood Measure |
| 16 cubic feet |
= |
1 cord foot |
| 8 cord feet |
= |
1 cord |
| Time Measure |
| 60 seconds |
= |
1 minute |
| 60 minutes |
= |
1 hour |
| 24 hours |
= |
1 day |
| 7 days |
= |
1 week |
| 4.333 weeks (avg.) |
= |
1 month |
| 12 months (365-366 days) |
= |
1 year |
| 10 years |
= |
1 decade |
| 10 decades |
= |
1 century |
| Angular and Circular Measure |
| 60 seconds |
= |
1 minute |
| 60 minutes |
= |
1 degree |
| 90 degrees |
= |
1 right angle |
| 180 degrees |
= |
1 straight angle |
| 360 degrees |
= |
1 circle |
| Troy Weight |
| 24 grains |
= |
1 pennyweight |
| 20 pennyweights |
= |
1 ounce |
| 12 ounces |
= |
1 pound |
| Avoirdupois Weight |
| 27 11/32 grains |
= |
1 dram |
| 16 drams |
= |
1 ounce |
| 16 ounces |
= |
1 pound |
| 100 pounds |
= |
1 short hundredweight |
| 20 short hundredweight |
= |
1 short ton (see Misc. Measure) |
| Apothecaries Weight |
| 20 grains |
= |
1 scruple |
| 3 scruples |
= |
1 dram |
| 8 drams |
= |
1 ounce |
| 12 ounces |
= |
1 pound |
| Misc. Measure |
| 1 nautical mile |
= |
6080 feet |
| 1 international nautical mile |
= |
1.852 kilometers or
6076.1155 feet |
| 1 international air mile |
= |
1.852 kilometers or
6076.1155 feet |
| 1 short ton (U.S. unit) |
= |
2000 avoirdupois pounds |
| 1 long ton (Great Britain unit) |
= |
2240 avoirdupois pounds |
| Speed of Light |
= |
299,792,458 meters/second or
186,282.4 miles/second |
| Light-year |
= |
9.46 trillion km (approx.) or
5.88 trillion mi. (approx.)
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