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grain (avoirdupois)
Symbol:  gr (avdp.), gr (av.) 
Category:  Mass 
SI Equivalent:  6.47989×10-5 kg
System:  UK, US 
Legal American and British unit of mass since WMA of 1963.
1 grain (av.) = 1/7000 lb
Convert     gr (avdp.), gr (av.)  
1 gr (avdp.), gr (av.) =
  Symbol Unit Name
7.11343×1025  m0, me  a.u. of mass (electron rest mass) 
2.22165×10-3    assay ton 
3.90228×1022  u, uma, Da(12C), AMU  atomic unit of mass (12C) 
3.90352×1022  u, uma, Da(16O), AMU  atomic unit of mass (16O) 
3.87198×1022  u, uma, Da(1H), AMU  atomic unit of mass (1H) 
6.47989×1016  ag  attogram 
3.9027×1019    avogram 
1.51976×10-6    bag (UK, cement) 
0.323995  ct.  carat (metric) 
0.315789  ct (troy)  carat (troy) 
1.42857×10-6  cH, cwt  cental 
6.47989  cg  centigram 
3.90228×1022  u, uma, Da  dalton (atomic unit of mass) 
6.47989×10-3  dag  decagram 
0.647989  dg  decigram 
1.66667×10-2  dr (troy)  dram (troy) 
1.66667×10-2  dr (ap.), dr (apoth.)  dram or drachm (apothecary) 
3.65714×10-2  dr (av.), dr (avdp)  dram or drachm (avoirdupois) 
7.11342×1025  m0, me  electron rest mass (a.u. of mass) 
6.47989×10-20  Eg  exagram 
6.47989×1013  fg  femtogram 
6.47989×104  g  gamma (mass) 
4.44014×10-6  slug  geepound (slug) 
6.47989×10-11  Gg  gigagram 
gr (apoth.), gr (ap.)  grain (apothecary) 
gr (troy)  grain (troy) 
6.47989×10-2  g  gram 
6.47989×10-4  hg  hectogram 
1.27551×10-6  cH, cwt, lg cwt  hundredweight (gross or long) 
1.42857×10-6  sh. cwt  hundredweight (net or short) 
1.27551×10-6  cwt (av.)  hundredweight (UK, avoirdupois) 
6.60765×10-6  Hyl, hyl  hyl 
6.47989×10-5  kg  kilogram 
1.42857×10-7  kip  kilopound (kip) 
1.10229×10-7    load (UK) 
6.80272×10-8    load (UK, wool) 
6.37755×10-8  lg ton (UK)  long ton (UK) 
6.47989×10-8  Mg  megagram 
6.60765×10-6  mug  metric slug (hyl) 
6.47989×104  µg  microgram 
64.7989  mg  milligram 
6.60765×10-6    MKpS unit of mass 
6.60765×10-6  mug  mug (hyl, metric clug, par, TME) 
6.47989×107  ng  nanogram 
2.08333×10-3  oz (apoth.), oz (ap.)  ounce (apothecary) 
2.28571×10-3  oz (advp.), oz (av.)  ounce (avoirdupois) 
2.08333×10-3  oz (troy)  ounce (troy) 
6.60765×10-6  par  par (hyl, mug, metric slug) 
4.16667×10-2  dwt (troy)  pennyweight (troy) 
6.47989×10-17  Pg  petagram 
6.47989×1010  pg  picogram 
1.42857×10-4  lb  pound 
1.42857×10-4  lb (av.)  pound (avoirdupois) 
1.73611×10-4  lb (troy), lb (tr.)  pound (troy) 
2.38095×10-4  lb (UK, new hay)  pound (UK, new hay) 
2.22222×10-4  lb (UK, obsolete hay)  pound (UK, obsolete hay) 
1.42857×10-4  lb (UK, straw)  pound (UK, straw) 
1.42857×10-4  lb (US)  pound (US) 
5.10204×10-6    quarter (UK, mass) 
2.55102×10-7    quarter (US, long) 
2.85714×10-7    quarter (US, short) 
6.47989×10-7  q  quintal (metric) 
1.42857×10-6  quint. (US, UK)  quintal (US, UK) 
4.08163×10-7    sack (UK, weight) 
5×10-2  s, scr (ap.)  scruple (UK, US, apoth.) 
7.14286×10-8  sh. Ton  short ton (US, ton) 
4.44014×10-6    slug (geepound) 
1.02041×10-5  st (UK)  stone (UK) 
1.14286×10-5  st (UK, wool)  stone (UK, wool) 
6.47989×10-14  Tg  teragram 
6.47989×10-8    ton (metric) 
6.37755×10-8  UK ton, lg ton  ton (UK, long) 
7.14286×10-8    ton (US, short) 
6.47989×10-8  t  tonne (metric) 
3.96825×10-6    truss 
6.47989×1022  yg  yoctogram 
6.47989×10-26  Yg  yottagram 
6.47989×1019  zg  zeptogram 
6.47989×10-23  Zg  zettagram