Units Currencies
Constants
Units Home
Unit Conversion
List Units
List Categories
Currencies
Convert Units
SI System
Base Units
Derived Units
Prefixes
Numbers
Constants
Base-N
Fractions
Time / Decimal
Resources
Bibliography
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

more free publications

Materials

Design

Processes

Units

Formulas

Math
 
grain (troy)
Symbol:  gr (troy) 
Category:  Mass 
SI Equivalent:  6.47989×10-5 kg
Dimension:  M 
System:  UK, US 
 
Notes
Unit used for weighing precious metals and precious stones.
1 grain (troy) = 1/5760 lb (troy)
Convert     gr (troy)  
1 gr (troy) =
Mass
  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 
1  gr (apoth.), gr (ap.)  grain (apothecary) 
1  gr (avdp.), gr (av.)  grain (avoirdupois) 
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 
Glossary
FREE Publications
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Mechanical Engineers Outlook

Guide for those interested in becoming a mechanical engineer. Includes qualifications, pay, and job duties.

more publications