# Mass unit conversion table

This table contains conversions between almost all mass units. Some units of mass are common and some are relatively rare. This is a good query tool.  Weight Converter

Name of unitSymbolDefinitionRelation to SI units
atomic mass unit, unifiedu; AMUSame as dalton(see below)1.660 539040(20) ×10 −27 kg
atomic unit of mass, electronrest massme9.109 38291(40) ×10 −31 kg
bag ( coffee) ≡ 60 kg= 60 kg
bag ( Portland cement) ≡ 94 lb av= 42.637 68278 kg
barge ≡ ​ 22  12short ton= 20 411.656 65 kg
caratkt≡ ​ 3  16gr= 205.196 5483 mg
carat(metric)ct≡ 200 mg= 200 mg
clove ≡ 8 lb av= 3.628 73896 kg
crith ≡ mass of 1 L of hydrogen gas at STP≈ 89.9349 mg
daltonDa1/12 the mass of an unboundneutral atom of
carbon-12in its nuclear and electronic
ground stateand at rest
1.660 538921(73) ×10 −27 kg
dram(apothecary; troy)dr t≡ 60 gr= 3.887 9346 g
dram(avoirdupois)dr av≡ ​ 27  1132gr= 1.771 8451953125 g
electronvolteV≡ 1 eV (energy unit) / c2= 1.782 66184(45) ×10 −36 kg
gammaγ≡ 1 μg= 1 μg
graingr≡ ​ 17000 lb av64.798 91 mg
gravegv.grave was the original name of the kilogram≡ 1 kg
hundredweight(long)long cwt or cwt≡ 112 lb av= 50.802 34544 kg
hundredweight(short); centalsh cwt≡ 100 lb av= 45.359 237 kg
kilogram
(kilogramme)
kg≡ mass of the prototype near Paris
≈ mass of 1 litre of water
≡ 1 kg ( SI base unit)
kipkip1000 lbav= 453.592 37 kg
mark ≡ 8 oz t= 248.827 8144 g
mite ≡ ​ 120gr= 3.239 9455 mg
mite (metric) ≡ ​ 120g= 50 mg
ounce (apothecary; troy)oz t≡ ​ 112 lb t= 31.103 4768 g
ounce( avoirdupois)oz av≡ ​ 116 lb= 28.349 523125 g
ounce (US food nutrition labelling)oz≡ 28 g = 28 g
pennyweightdwt; pwt≡ ​ 120oz t= 1.555 17384 g
point ≡ ​ 1100ct= 2 mg
pound (avoirdupois)lb av0.453 59237 kg= 7000grains0.453 59237 kg
pound (metric) ≡ 500 g= 500 g
pound (troy)lb t5760grains= 0.373 2417216 kg
quarter (imperial) ≡ ​ 14long cwt = 2 st = 28 lb av= 12.700 58636 kg
quarter (informal) ≡ ​ 14short ton= 226.796 185 kg
quarter, long (informal) ≡ ​ 14long ton= 254.011 7272 kg
quintal(metric)q≡ 100 kg= 100 kg
scruple( apothecary)s ap≡ 20 gr= 1.295 9782 g
sheet ≡ ​ 1700 lb av= 647.9891 mg
slug; geepound; hylslug≡ 1 ɡ0 × 1 lb av × 1 s 2/ft14.593 903 kg
stonest≡ 14 lb av= 6.350 29318 kg
ton, assay(long)AT≡ 1 mg × 1 long ton ÷ 1 oz t= 32. 6 g
ton, assay(short)AT≡ 1 mg × 1 short ton ÷ 1 oz t= 29.1 6 g
ton, longlong tn or ton2240 lb= 1 016.046 9088 kg
ton, shortsh tn2000 lb= 907.184 74 kg
tonne( mtsunit)t1000 kg= 1000 kg
wey ≡ 252 lb = 18 st= 114.305 27724 kg(variants exist)
ZentnerZtr.Definitions vary.