United States Unit of Measure


United States Units of Measure

Linear Measure12 inches = 1 foot3 feet = 1 yard5 1/2 yard = 1 rod40 rod = 1 furlong8 furlongs (5280 ft) = 1 statute mile

 


Mariners' Measure6 feet = 1 fathom1000 fathoms (approx.)
(see Misc. Measure) = 1 nautical mile3 nautical miles = 1 league

  


Square Measure

144 square inches = 1 square foot9 square feet = 1 square yard30.25 square yards = 1 square rod160 square rods = 1 acre640 square acres = 1 square mile

 


Cubic Measure1728 cubic inches = 1 cubic foot27 cubic feet = 1 cubic yard

 


Surveyors' Measure7.92 inches = 1 link100 links = 1 chain

 


Liquid Measure4 gills = 1 pint2 cups = 1 pint2 pints = 1 quart4 quarts = 1 gallon31.5 gallons = 1 barrel2 barrel = 1 hogshead

 


Apothecaries' Fluid Measure60 minims = 1 fluid dram8 fluid drams = 1 fluid ounce16 fluid ounces = 1 pint2 pints = 1 quart4 quarts = 1 gallon

 


Dry Measure2 pints = 1 quart8 quarts = 1 peck4 peck = 1 bushel

 


Wood Measure16 cubic feet = 1 cord foot8 cord feet = 1 cord

 


Time Measure60 seconds = 1 minute60 minutes = 1 hour24 hours = 1 day7 days = 1 week4.333 weeks (avg.) = 1 month12 months (365-366 days) = 1 year10 years = 1 decade10 decades = 1 century

 


Angular and Circular Measure60 seconds = 1 minute60 minutes = 1 degree90 degrees = 1 right angle180 degrees = 1 straight angle360 degrees = 1 circle

 


Troy Weight24 grains = 1 pennyweight20 pennyweights = 1 ounce12 ounces = 1 pound

 


Avoirdupois Weight27 11/32 grains = 1 dram16 drams = 1 ounce16 ounces = 1 pound100 pounds = 1 short hundredweight20 short hundredweight = 1 short ton (see Misc. Measure)

 


Apothecaries Weight20 grains = 1 scruple3 scruples = 1 dram8 drams = 1 ounce12 ounces = 1 pound

 


Misc. Measure1 nautical mile = 6080 feet1 international nautical mile = 1.852 kilometers or
6076.1155 feet1 international air mile = 1.852 kilometers or
6076.1155 feet1 short ton (U.S. unit) = 2000 avoirdupois pounds1 long ton (Great Britain unit) = 2240 avoirdupois poundsSpeed of Light = 299,792,458 meters/second or
186,282.4 miles/secondLight-year = 9.46 trillion km (approx.) or
5.88 trillion mi. (approx.)


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