
Troy Ounces to Ounces
Converter 
Convert Ounces to Troy Ounces (oz to oz t)
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Conversion Table
troy ounces
to ounces 
oz t  oz 
1 oz t  1.0971 oz 
2 oz t  2.1943 oz 
3 oz t  3.2914 oz 
4 oz t  4.3886 oz 
5 oz t  5.4857 oz 
6 oz t  6.5829 oz 
7 oz t  7.68 oz 
8 oz t  8.7771 oz 
9 oz t  9.8743 oz 
10 oz t  10.9714 oz 
11 oz t  12.0686 oz 
12 oz t  13.1657 oz 
13 oz t  14.2629 oz 
14 oz t  15.36 oz 
15 oz t  16.4571 oz 
16 oz t  17.5543 oz 
17 oz t  18.6514 oz 
18 oz t  19.7486 oz 
19 oz t  20.8457 oz 
20 oz t  21.9429 oz 
How to convert 1 troy ounce (oz t) = 1.097142857 ounce (oz).
Troy Ounce (oz t) is a unit of Weight used in Standard system.
Ounce (oz) is a unit of Weight used in Standard system. Troy Ounces: A Unit of Weight
Troy ounces are a unit of weight that are used for measuring precious metals, such as gold, silver and platinum. Troy ounces are derived from the French word once, which was the name of a unit of weight used in the Middle Ages. The symbol for troy ounce is oz t.
Definition of the Troy Ounce
The troy ounce is defined as 20 pennyweights, which are each 24 grains. The troy grain is equal to the avoirdupois grain, which is one seventhousandth of an avoirdupois pound. The troy ounce is heavier than the avoirdupois ounce, but lighter than the apothecaries’ ounce.
The troy ounce is equal to about 1.0971 avoirdupois ounces or 31.1035 grams. The troy grain is equal to about 0.0648 milligrams.
How to Convert Troy Ounces
Troy ounces can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert troy ounces to other units of weight in the US customary system and the SI system:
 To convert troy ounces to avoirdupois ounces, multiply by 1.0971. For example, 10 oz t = 10 x 1.0971 = 10.971 oz.
 To convert troy ounces to avoirdupois pounds, divide by 14.5833. For example, 5 oz t = 5 / 14.5833 = 0.343 lb.
 To convert troy ounces to tons (short), divide by 29166.67. For example, 20 oz t = 20 / 29166.67 = 0.000685 ton.
 To convert troy ounces to kilograms, divide by 32.1507. For example, 15 oz t = 15 / 32.1507 = 0.4666 kg.
 To convert troy ounces to grams, multiply by 31.1035. For example, 25 oz t = 25 x 31.1035 = 777.5875 g.
 To convert troy ounces to milligrams, multiply by 31103.4768. For example, 30 oz t = 30 x 31103.4768 = 933104.304 mg.
Where Troy Ounces are Used
Troy ounces are used in different countries and regions for different applications and purposes. Here are some examples of where troy ounces are used:
 In most countries that use the SI system, troy ounces are not used for measuring weight, but only for measuring precious metals, such as gold, silver and platinum.
 In the United States, troy ounces are used for measuring precious metals, especially for gold and silver coins and bullion.
 In Canada, Australia and New Zealand, troy ounces are used for measuring precious metals, especially for gold and silver coins and bullion.
 In the United Kingdom, troy ounces are used for measuring precious metals, especially for gold and silver coins and bullion.
 In India, troy ounces are used for measuring precious metals, especially for gold and silver jewelry.
History of Troy Ounces
Troy ounces have a long history that dates back to ancient times. Here are some highlights of the history of troy ounces:
 The troy ounce was originally based on the weight of a Roman uncia, which was one twelfth of a Roman libra or pound, which was equivalent to about 27 grams.
 The troy ounce was used in different systems of measurement, such as the Roman system, the Byzantine system, the Arabic system and the English system. It varied from about 26 grams to about 32 grams depending on the region and the time period.
 The troy ounce was standardized by royal statutes and international agreements in different periods of history. For example, in 1527 an act of Henry VIII fixed the troy ounce at exactly 480 grains; in 1828 an act of Congress adopted the troy ounce as the official unit of weight for coinage in the United States; in 1959 an international agreement defined the international avoirdupois ounce as exactly 28.349523125 grams, which made the troy ounce exactly 31.1034768 grams.
Example Conversions of Troy Ounces to Other Units
Here are some examples of conversions of troy ounces to other units of weight:
 1 oz t = 1.0971 oz
 1 oz t = 0.0686 lb
 1 oz t = 0.000034 ton
 1 oz t = 0.0311 kg
 1 oz t = 31.1035 g
 1 oz t = 31103.4768 mg
 1 oz t = 0.0833 lb t
 1 oz t = 20 dwt
 1 oz t = 480 gr
Definition of the Ounce
The ounce is defined differently in different systems of measurement. The most common ounce is the international avoirdupois ounce, which is equal to 28.349523125 grams or 437.5 grains. This is the ounce that is used for most purposes, such as measuring food, postal items, fabric, paper and boxing gloves. The avoirdupois ounce is onesixteenth of an avoirdupois pound, which is defined as 7000 grains.
Another ounce is the international troy ounce, which is equal to 31.1034768 grams or 480 grains. This is the ounce that is used for measuring precious metals and gems, such as gold, silver, platinum and diamonds. The troy ounce is onetwelfth of a troy pound, which is defined as 5760 grains.
A third ounce is the apothecaries’ ounce, which is also equal to 480 grains, but it is divided into eight drams instead of twelve pennyweights like the troy ounce. The apothecaries’ ounce is used for measuring medicines and drugs.
There are also other historical or regional ounces that have different values, such as the Spanish ounce, the French ounce, the Portuguese ounce, the Roman/Italian ounce, the Dutch metric ounce and the Chinese metric ounce.
How to Convert Ounces
Ounces can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert ounces to other units of weight in the US customary system and the SI system:
 To convert ounces to pounds, divide by 16. For example, 32 oz = 32/16 = 2 lb.
 To convert ounces to tons (short), divide by 32000. For example, 64000 oz = 64000/32000 = 2 tons.
 To convert ounces to grams, multiply by 28.349523125. For example, 4 oz = 4 x 28.349523125 = 113.3980925 g.
 To convert ounces to kilograms, multiply by 0.028349523125. For example, 8 oz = 8 x 0.028349523125 = 0.226796185 kg.
 To convert ounces to milligrams, multiply by 28349.523125. For example, 2 oz = 2 x 28349.523125 = 56699.04625 mg.
 To convert ounces to micrograms, multiply by 28349523.125. For example, 1 oz = 1 x 28349523.125 = 28349523.125 µg.
Where Ounces are Used
Ounces are used in different countries and regions for different applications and purposes. Here are some examples of where ounces are used:
 In the United States, ounces are used for measuring packaged foods and food portions, postal items, areal density of fabric and paper, boxing gloves and firearms.
 In the United Kingdom, ounces are used for measuring food portions and ingredients, woolen cloth and gold bullion.
 In Canada, ounces are used for measuring food portions and ingredients, precious metals and gems and liquor bottles.
 In Australia and New Zealand, ounces are used for measuring food portions and ingredients, precious metals and gems and baby weights.
 In China, ounces are used for measuring tea leaves and pearls.
 In India, ounces are used for measuring gold ornaments and silk fabrics.
History of Ounces
Ounces have a long history that dates back to ancient times. Here are some highlights of the history of ounces:
 The uncia was an ancient Roman unit of measurement that was onetwelfth of a Roman pound or libra. It was also used as a unit of volume and area.
 The uncia was borrowed into Old English as ynsan or yndsan from a Vulgar Latin form with ts for c before i (palatalization). This became inch in modern English.
 The uncia was also borrowed into Middle English through AngloNorman and Middle French as unce, once or ounce. This became ounce in modern English.
 The ounce was divided into different fractions and multiples, such as the dram, the pennyweight, the scruple and the mark.
 The ounce was used in different systems of measurement, such as the imperial system, the US customary system, the troy system and the apothecaries’ system.
 The ounce was standardized by international agreements, such as the international yard and pound agreement of 1959 and the international troy ounce agreement of 1958.
Example Conversions of Ounces to Other Units
Here are some examples of conversions of ounces to other units of weight:
 1 oz = 0.0625 lb
 1 oz = 0.00003125 ton
 1 oz = 28.349523125 g
 1 oz = 0.028349523125 kg
 1 oz = 28349.523125 mg
 1 oz = 28349523.125 µg
 1 oz = 0.911458333 troy oz
 1 oz = 0.911458333 apothecaries’ oz
 1 oz = 1.041666667 Spanish oz
 1 oz = 0.927272727 French oz
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