Troy Pounds to Ounces
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1 troy pound (lb t) = 13.16571429 ounce (oz). Troy Pound (lb t) is a unit of Weight used in Standard system. Ounce (oz) is a unit of Weight used in Standard system.

Troy Pounds: A Unit of Weight

Troy pounds are a unit of weight that are used for measuring precious metals, such as gold, silver and platinum. Troy pounds are derived from the French word troye, which was the name of a market town in France where English merchants traded in the Middle Ages. The symbol for troy pound is lb t.

Definition of the Troy Pound

The troy pound is defined as 12 troy ounces, which are each 20 pennyweights, which are each 24 grains. The troy grain is equal to the avoirdupois grain, which is one seven-thousandth of an avoirdupois pound. The troy ounce is heavier than the avoirdupois ounce, but the troy pound is lighter than the avoirdupois pound.

The troy pound is equal to about 0.8229 avoirdupois pounds or 0.3732 kilograms. 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 Pounds

Troy pounds can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert troy pounds to other units of weight in the US customary system and the SI system:

• To convert troy pounds to avoirdupois pounds, multiply by 0.8229. For example, 10 lb t = 10 x 0.8229 = 8.229 lb.
• To convert troy pounds to avoirdupois ounces, multiply by 13.1657. For example, 5 lb t = 5 x 13.1657 = 65.8285 oz.
• To convert troy pounds to tons (short), divide by 1216.05. For example, 20 lb t = 20 / 1216.05 = 0.0164 ton.
• To convert troy pounds to kilograms, multiply by 0.3732. For example, 15 lb t = 15 x 0.3732 = 5.598 kg.
• To convert troy pounds to grams, multiply by 373.2417. For example, 25 lb t = 25 x 373.2417 = 9331.0425 g.
• To convert troy pounds to milligrams, multiply by 373241.7216. For example, 30 lb t = 30 x 373241.7216 = 11197251.648 mg.

Where Troy Pounds are Used

Troy pounds are used in different countries and regions for different applications and purposes. Here are some examples of where troy pounds are used:

• In most countries that use the SI system, troy pounds are not used for measuring weight, but only for measuring precious metals, such as gold, silver and platinum.
• In the United States, troy pounds are used for measuring precious metals, especially for gold and silver coins and bullion.
• In Canada, Australia and New Zealand, troy pounds are used for measuring precious metals, especially for gold and silver coins and bullion.
• In the United Kingdom, troy pounds are used for measuring precious metals, especially for gold and silver coins and bullion.
• In India, troy pounds are used for measuring precious metals, especially for gold and silver jewelry.

History of Troy Pounds

Troy pounds have a long history that dates back to ancient times. Here are some highlights of the history of troy pounds:

• The troy pound was originally based on the weight of a Roman libra, which was a unit of mass used in ancient Rome that was equivalent to about 328 grams.
• The troy pound 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 350 grams to about 400 grams depending on the region and the time period.
• The troy pound 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 pound at exactly 5760 grains; in 1828 an act of Congress adopted the troy pound 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 Pounds to Other Units

Here are some examples of conversions of troy pounds to other units of weight:

• 1 lb t = 0.8229 lb
• 1 lb t = 13.1657 oz
• 1 lb t = 0.000411 ton
• 1 lb t = 0.3732 kg
• 1 lb t = 373.2417 g
• 1 lb t = 373241.7216 mg
• 1 lb t = 12 oz t
• 1 lb t = 240 dwt
• 1 lb t = 5760 gr
• 1 lb t = 0.3671 stone

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 one-sixteenth 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 one-twelfth 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 one-twelfth 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 Anglo-Norman 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