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Symbol:  kg 
Category:  Mass 
SI Equivalent:  1 kg
System:  SI 
The base SI mass unit. It is equal to the mass of the international prototype of the kilogram kept at the International Bureau of Weights and Measures laboratory at Sévres in France. The prototype is a cylinder of iridium-platinum alloy with 39 mm in diameter and 39 mm in height.
Convert     kg  
1 kg =
  Symbol Unit Name
1.09777×1030  m0, me  a.u. of mass (electron rest mass) 
34.2853    assay ton 
6.02214×1026  u, uma, Da(12C), AMU  atomic unit of mass (12C) 
6.02405×1026  u, uma, Da(16O), AMU  atomic unit of mass (16O) 
5.97538×1026  u, uma, Da(1H), AMU  atomic unit of mass (1H) 
1×1021  ag  attogram 
6.02279×1023    avogram 
2.34534×10-2    bag (UK, cement) 
5000  ct.  carat (metric) 
4873.37  ct (troy)  carat (troy) 
2.20462×10-2  cH, cwt  cental 
1×105  cg  centigram 
6.02214×1026  u, uma, Da  dalton (atomic unit of mass) 
100  dag  decagram 
1×104  dg  decigram 
257.206  dr (troy)  dram (troy) 
257.206  dr (ap.), dr (apoth.)  dram or drachm (apothecary) 
564.383  dr (av.), dr (avdp)  dram or drachm (avoirdupois) 
1.09777×1030  m0, me  electron rest mass (a.u. of mass) 
1×10-15  Eg  exagram 
10×1017  fg  femtogram 
1×109  g  gamma (mass) 
6.85218×10-2  slug  geepound (slug) 
1×10-6  Gg  gigagram 
1.54324×104  gr (apoth.), gr (ap.)  grain (apothecary) 
1.54324×104  gr (avdp.), gr (av.)  grain (avoirdupois) 
1.54324×104  gr (troy)  grain (troy) 
1000  g  gram 
10  hg  hectogram 
1.96841×10-2  cH, cwt, lg cwt  hundredweight (gross or long) 
2.20462×10-2  sh. cwt  hundredweight (net or short) 
1.96841×10-2  cwt (av.)  hundredweight (UK, avoirdupois) 
0.101972  Hyl, hyl  hyl 
2.20462×10-3  kip  kilopound (kip) 
1.7011×10-3    load (UK) 
1.04982×10-3    load (UK, wool) 
9.84207×10-4  lg ton (UK)  long ton (UK) 
1×10-3  Mg  megagram 
0.101972  mug  metric slug (hyl) 
1×109  µg  microgram 
1×106  mg  milligram 
0.101972    MKpS unit of mass 
0.101972  mug  mug (hyl, metric clug, par, TME) 
1×1012  ng  nanogram 
32.1507  oz (apoth.), oz (ap.)  ounce (apothecary) 
35.274  oz (advp.), oz (av.)  ounce (avoirdupois) 
32.1507  oz (troy)  ounce (troy) 
0.101972  par  par (hyl, mug, metric slug) 
643.015  dwt (troy)  pennyweight (troy) 
1×10-12  Pg  petagram 
10×1014  pg  picogram 
2.20462  lb  pound 
2.20462  lb (av.)  pound (avoirdupois) 
2.67923  lb (troy), lb (tr.)  pound (troy) 
3.67437  lb (UK, new hay)  pound (UK, new hay) 
3.42941  lb (UK, obsolete hay)  pound (UK, obsolete hay) 
2.20462  lb (UK, straw)  pound (UK, straw) 
2.20462  lb (US)  pound (US) 
7.87365×10-2    quarter (UK, mass) 
3.93683×10-3    quarter (US, long) 
4.40925×10-3    quarter (US, short) 
1×10-2  q  quintal (metric) 
2.20462×10-2  quint. (US, UK)  quintal (US, UK) 
6.29892×10-3    sack (UK, weight) 
771.618  s, scr (ap.)  scruple (UK, US, apoth.) 
1.10231×10-3  sh. Ton  short ton (US, ton) 
6.85218×10-2    slug (geepound) 
0.157473  st (UK)  stone (UK) 
0.17637  st (UK, wool)  stone (UK, wool) 
1×10-9  Tg  teragram 
1×10-3    ton (metric) 
9.84207×10-4  UK ton, lg ton  ton (UK, long) 
1.10231×10-3    ton (US, short) 
1×10-3  t  tonne (metric) 
6.12395×10-2    truss 
10×1026  yg  yoctogram 
10×10-22  Yg  yottagram 
10×1023  zg  zeptogram 
1×10-18  Zg  zettagram