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ounce (troy)
Symbol:  oz (troy) 
Category:  Mass 
SI Equivalent:  3.11035×10-2 kg
System:  UK, US 
This unit was used for weighing precious metals, precious stones and gems.
1 oz (troy)= 1/12 lb (troy)
 = 20 pennyweights (troy)
 = 480 grains (troy)
Convert     oz (troy)  
1 oz (troy) =
  Symbol Unit Name
3.41444×1028  m0, me  a.u. of mass (electron rest mass) 
1.06639    assay ton 
1.87309×1025  u, uma, Da(12C), AMU  atomic unit of mass (12C) 
1.87369×1025  u, uma, Da(16O), AMU  atomic unit of mass (16O) 
1.85855×1025  u, uma, Da(1H), AMU  atomic unit of mass (1H) 
3.11035×1019  ag  attogram 
1.8733×1022    avogram 
7.29483×10-4    bag (UK, cement) 
155.517  ct.  carat (metric) 
151.579  ct (troy)  carat (troy) 
6.85714×10-4  cH, cwt  cental 
3110.35  cg  centigram 
1.87309×1025  u, uma, Da  dalton (atomic unit of mass) 
3.11035  dag  decagram 
311.035  dg  decigram 
dr (troy)  dram (troy) 
dr (ap.), dr (apoth.)  dram or drachm (apothecary) 
17.5543  dr (av.), dr (avdp)  dram or drachm (avoirdupois) 
3.41444×1028  m0, me  electron rest mass (a.u. of mass) 
3.11035×10-17  Eg  exagram 
3.11035×1016  fg  femtogram 
3.11035×107  g  gamma (mass) 
2.13127×10-3  slug  geepound (slug) 
3.11035×10-8  Gg  gigagram 
480  gr (apoth.), gr (ap.)  grain (apothecary) 
480  gr (avdp.), gr (av.)  grain (avoirdupois) 
480  gr (troy)  grain (troy) 
31.1035  g  gram 
0.311035  hg  hectogram 
6.12245×10-4  cH, cwt, lg cwt  hundredweight (gross or long) 
6.85714×10-4  sh. cwt  hundredweight (net or short) 
6.12245×10-4  cwt (av.)  hundredweight (UK, avoirdupois) 
3.17167×10-3  Hyl, hyl  hyl 
3.11035×10-2  kg  kilogram 
6.85714×10-5  kip  kilopound (kip) 
5.29101×10-5    load (UK) 
3.26531×10-5    load (UK, wool) 
3.06122×10-5  lg ton (UK)  long ton (UK) 
3.11035×10-5  Mg  megagram 
3.17167×10-3  mug  metric slug (hyl) 
3.11035×107  µg  microgram 
3.11035×104  mg  milligram 
3.17167×10-3    MKpS unit of mass 
3.17167×10-3  mug  mug (hyl, metric clug, par, TME) 
3.11035×1010  ng  nanogram 
oz (apoth.), oz (ap.)  ounce (apothecary) 
1.09714  oz (advp.), oz (av.)  ounce (avoirdupois) 
3.17167×10-3  par  par (hyl, mug, metric slug) 
20  dwt (troy)  pennyweight (troy) 
3.11035×10-14  Pg  petagram 
3.11035×1013  pg  picogram 
6.85714×10-2  lb  pound 
6.85714×10-2  lb (av.)  pound (avoirdupois) 
8.33333×10-2  lb (troy), lb (tr.)  pound (troy) 
0.114286  lb (UK, new hay)  pound (UK, new hay) 
0.106667  lb (UK, obsolete hay)  pound (UK, obsolete hay) 
6.85714×10-2  lb (UK, straw)  pound (UK, straw) 
6.85714×10-2  lb (US)  pound (US) 
2.44898×10-3    quarter (UK, mass) 
1.22449×10-4    quarter (US, long) 
1.37143×10-4    quarter (US, short) 
3.11035×10-4  q  quintal (metric) 
6.85714×10-4  quint. (US, UK)  quintal (US, UK) 
1.95918×10-4    sack (UK, weight) 
24  s, scr (ap.)  scruple (UK, US, apoth.) 
3.42857×10-5  sh. Ton  short ton (US, ton) 
2.13127×10-3    slug (geepound) 
4.89796×10-3  st (UK)  stone (UK) 
5.48571×10-3  st (UK, wool)  stone (UK, wool) 
3.11035×10-11  Tg  teragram 
3.11035×10-5    ton (metric) 
3.06122×10-5  UK ton, lg ton  ton (UK, long) 
3.42857×10-5    ton (US, short) 
3.11035×10-5  t  tonne (metric) 
1.90476×10-3    truss 
3.11035×1025  yg  yoctogram 
3.11035×10-23  Yg  yottagram 
3.11035×1022  zg  zeptogram 
3.11035×10-20  Zg  zettagram