Avoirdupois Weight - Small; US & Imperial:       
  poundlb
  ounceoz
  dramdr
  graingr
Avoirdupois Weight - Large US:       
  ton shortsh tn
  hundredweight shortsh cwt
  quarterqtr
Troy Weight - Troy weights:       
  poundlb
  ounceoz
  pennyweightdwt
 
 
 
 
Metric Weight - SI grams Medium:       
  kilogramkg
  hectogramhg
  dekagramdag
  gramg
  decigramdg
  centigramcg
  milligrammg
  microgramμg
Metric Weight - MTS tonne Scales:       
  gigatonneGt
  megatonneMt
  kilotonnekt
  hectotonneht
  dekatonnedat
  tonnet
Round to Decimal Places:

Scale & Weight Definitions and Information -- US Weights --> pg 2
Pound (avoirdupois) Ounce (avoirdupois) Dram (avoirdupois) Grain (avoirdupois) Ton Short (avoirdupois) Hundredweight Sh (avoirdupois) Quarter US (avoirdupois) Pound (apothecary; Troy) Ounce (apothecary; Troy) Pennyweight (troy) 1) To see definitions, hover mouse cursor over items in the left side of this window.
2) Click left mouse button to select definition and see values associated with it in the window above.
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Ounce (avoirdupois)
Abbreviation: oz

The ounce avoirdupois is defined as 1/16 pound avoirdupois, is equal to 437.5 grains, is exactly equal to 28.349523125 grams, equals 175/192 ounce troy or apothecary, and is used in both US and Imperial weight systems.
1 ounce=437 1/2grains (ap, av, troy, or mint)
=16drams (avoirdupois)
=1/16pound (avoirdupois)
=1/112clove (wool) (avoirdupois)
=1/224stone (avoirdupois)
=1/448tod (avoirdupois)
=1/448quarter imperial (avoirdupois)
=1/1792hundredweight long (avoirdupois)
=28.349523125grams (exactly)
~7.291666667drams (apothecary; troy)
=175/192ounce (apothecary; troy)
Pound (avoirdupois)
Abbreviation: lb = liber

The pound avoirdupois, libra pondo, is defined as 7000 grains, is equal to 16 ounces avoirdupois, is exactly 453.59237 grams, and is used in both US and Imperial weight systems.
1 pound=7000grains (ap, av, troy, or mint)
=256drams (avoirdupois)
=16ounces (avoirdupois)
=1/7clove (wool) (avoirdupois)
=1/14stone (avoirdupois)
=1/28tod (avoirdupois)
=1/28quarter imperial (avoirdupois)
=1/112hundredweight long (avoirdupois)
=1/252wey (avoirdupois)
=453.59237grams (exactly)
=116 2/3drams (apothecary; troy)
=14 7/12ounces (apothecary; troy)
=1 31/144pound (apothecary; troy)
Ounce (avoirdupois)
Abbreviation: oz

The ounce avoirdupois is defined as 1/16 pound avoirdupois, is equal to 437.5 grains, is exactly equal to 28.349523125 grams, equals 175/192 ounce troy or apothecary, and is used in both US and Imperial weight systems.
1 ounce=437 1/2grains (ap, av, troy, or mint)
=16drams (avoirdupois)
=1/16pound (avoirdupois)
=1/112clove (wool) (avoirdupois)
=1/224stone (avoirdupois)
=1/448tod (avoirdupois)
=1/448quarter imperial (avoirdupois)
=1/1792hundredweight long (avoirdupois)
=28.349523125grams (exactly)
~7.291666667drams (apothecary; troy)
=175/192ounce (apothecary; troy)
Dram (avoirdupois)
Abbreviation: dr

The dram avoirdupois is defined as 1/16 ounce avoirdupois, and is equal to 27 11/32 grains, is exactly 1.7718451953125 grams, and is used in both US and Imperial weight systems.
1 dram=27 11/32grains (ap, av, troy, or mint)
=1/16ounce (avoirdupois)
=1/256pound (avoirdupois)
=1/1792nail (avoirdupois)
=1/1792clove (wool) (avoirdupois)
=1/3584stone (avoirdupois)
=1/7168tod (avoirdupois)
=1/7168quarter imperial (avoirdupois)
=1.7718451953125grams (exactly)
~0.4557291667dram (apothecary; troy)
~0.0569661458ounce (apothecary; troy)
Grain (avoirdupois)
Abbreviation: gr

The grain has been defined in the International System of Units as exactly 64.79891 milligrams, 1/7000 pound (avoirdupois), and 1/5760 pound (apothecary; troy). The grain is equal in the Troy, avoirdupois, apothecary scales.
1 grain=480droit (apothecary; troy)
=20mite (apothecary; troy)
=6/19carat (troy)
=1/20scruple (apothecary)
=1/24pennyweight (apothecary; troy)
=1/60dram (apothecary; troy)
=1/480ounce (apothecary; troy)
=1/7000pound (avoirdupois; US/GB)
=64.79891milligrams (exactly)
=32.399455point (metric)(exactly)
=1.2959782mite (metric)(exactly)
=0.32399455carat (metric)(exactly)
Ton Short (avoirdupois)
Abbreviation: sh tn

The short ton, or US ton, is defined as 20 short hundredweights, and is equal to 2,000 pounds avoirdupois, is exactly 907.18474 kilograms, and is primarily a US measure derived from the tun.
1 ton=2000pounds (avoirdupois)
=142 6/7stones(avoirdupois)
=80quarters US (avoirdupois)
=17 6/7hundredweights long (avoirdupois)
=7 61/63weys (avoirdupois)
=2kips (avoirdupois)
=25/28ton long (avoirdupois)
=907.18474kilograms (exactly)
=29166 2/3ounces (apothecary; troy)
=2430 5/9pounds (apothecary; troy)
Hundredweight Sh (avoirdupois)
Abbreviation: sh cwt

The short hundredweight is defined as 100 pounds avoirdupois, and is equal to 4 quarters US, 1/20 short ton avoirdupois, which is equal to 45.359237 kilograms and is commonly used in the US system.
1 hundredweight=100pounds (avoirdupois)
=14 2/7cloves (wool) (avoirdupois)
=7 1/7stones (avoirdupois)
=3 4/7tods (avoirdupois)
=4quarters US (avoirdupois)
=25/63wey (avoirdupois)
=1/20ton short (avoirdupois)
=45.359237kilograms (exactly)
=1458 1/3ounces (apothecary; troy)
=121 19/36pounds (apothecary; troy)
Quarter US (avoirdupois)
Abbreviation: qtr

The quarter US is defined as 1/4 short hundredweight avoirdupois, is equal 25 pounds avoirdupois, and is exactly 11.33980925 kilograms.
1 quarter=400ounces (avoirdupois)
=25pounds (avoirdupois)
=3 19/35cloves (wool) (avoirdupois)
=1/4hundredweight short (avoirdupois)
=25/112hundredweight long (avoirdupois)
=1/40kip (avoirdupois)
=1/80ton short (avoirdupois)
=11.33980925kilograms (exactly)
=364 5/12ounces (apothecary; troy)
=30 55/144pounds (apothecary; troy)
Pound (apothecary; Troy)
Abbreviation: lb

The troy pound, libra pondo, is defined as 5760 grains, is equal to 12 troy or apothecary ounces, and is exactly 373.2417216 grams and exactly equals 1 apothecary pound.
1 pound=5760grains (ap, av, troy, or mint)
=1818 18/19carats (troy)
=288scruples (apothecary)
=240pennyweights (troy)
=96drams (apothecary; troy)
=12ounces (apothecary; troy)
=3/2mark (troy)
=373.2417216grams (exactly)
=13 29/175ounce (avoirdupois)
=144/175pound (avoirdupois)
Ounce (apothecary; Troy)
Abbreviation: oz

The troy ounce is defined as 1/12 pound troy, is equal to 480 grains, is exactly equal to 31.1034768 grams, and is 192/175 ounce avoirdupois or approximatly 1.1 ounce avoirdupois.
1 ounce=480grains (ap, av, troy, or mint)
=151 10/19carats (troy)
=24scruples (apothecary)
=20pennyweights (troy)
=8drams (apothecary; troy)
=1/8mark (troy)
=1/12pound (apothecary; troy)
=31.1034768grams (exactly)
=192/175ounce (avoirdupois)
=12/175pound (avoirdupois)
Pennyweight (troy)
Abbreviation: pwt, dwt -> d=denarius

The pennyweight troy (abbreviated dwt) is defined as a unit of mass equal to 24 grains, 1/20 of a troy ounce, 1/240 of a troy pound, approximately 0.054857 avoirdupois ounce and exactly 1.55517384 grams. (Note: the d in dwt stands for denarius)
1 pennyweight=480mites (troy; mint weights)
=24grains (ap, av, troy, or mint)
=7 11/19carats (troy)
=1 1/5scruples (apothecary)
=2/5dram (apothecary; troy)
=1/20ounce (apothecary; troy)
=1/160mark (troy)
=1/240pound (apothecary; troy)
=1.55517384grams (exactly)
=48/875ounce (avoirdupois)
=3/875pound (avoirdupois)