Ounces to Grams Converter (oz to g)
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Convert Grams to Ounces (g to oz) ▶

Conversion Table

ounces to grams
ozg
1 oz 28.3495 g
2 oz 56.699 g
3 oz 85.0486 g
4 oz 113.3981 g
5 oz 141.7476 g
6 oz 170.0971 g
7 oz 198.4467 g
8 oz 226.7962 g
9 oz 255.1457 g
10 oz 283.4952 g
11 oz 311.8448 g
12 oz 340.1943 g
13 oz 368.5438 g
14 oz 396.8933 g
15 oz 425.2428 g
16 oz 453.5924 g
17 oz 481.9419 g
18 oz 510.2914 g
19 oz 538.6409 g
20 oz 566.9905 g

How to convert

1 ounce (oz) = 28.34952313 gram (g). Ounce (oz) is a unit of Weight used in Standard system. Gram (g) is a unit of Weight used in Metric system.

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

Grams: A Unit of Weight

Grams are a unit of weight that are used in the International System of Units (SI), also known as the metric system. Grams are derived from the French word gramme, which was taken from the Late Latin term gramma, meaning a small weight. The symbol for gram is g.

Definition of the Gram

The gram is defined as one one-thousandth of a kilogram, which is the base unit of mass in the SI. The kilogram is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10 −34 when expressed in the unit J s, which is equal to kg m 2 s −1, where the meter and the second are defined in terms of c and ∆ν Cs. The Planck constant is a fundamental physical constant that relates the energy of a photon to its frequency.

The gram is a very small unit of weight, equivalent to about 0.035 ounces or 0.002 pounds. It is commonly used for measuring non-liquid ingredients in cooking, such as flour, sugar, salt and spices. It is also used for measuring small masses, such as jewelry, coins, medicines and chemicals.

How to Convert Grams

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

  • To convert grams to ounces, divide by 28.349523125. For example, 100 g = 100 / 28.349523125 = 3.527 oz.
  • To convert grams to pounds, divide by 453.59237. For example, 500 g = 500 / 453.59237 = 1.102 lb.
  • To convert grams to tons (short), divide by 907184.74. For example, 1000 g = 1000 / 907184.74 = 0.0011 ton.
  • To convert grams to kilograms, divide by 1000. For example, 200 g = 200 / 1000 = 0.2 kg.
  • To convert grams to milligrams, multiply by 1000. For example, 50 g = 50 x 1000 = 50000 mg.
  • To convert grams to micrograms, multiply by 1000000. For example, 10 g = 10 x 1000000 = 10000000 µg.

Where Grams are Used

Grams are used in different countries and regions for different applications and purposes. Here are some examples of where grams are used:

  • In most countries that use the SI system, grams are used for measuring food portions and ingredients, postal items, drugs and medicines, precious metals and gems and scientific experiments.
  • In the United States, grams are sometimes used for measuring food portions and ingredients, especially for nutritional information labels, drugs and medicines, precious metals and gems and scientific experiments.
  • In Canada, grams are used for measuring food portions and ingredients, postal items, drugs and medicines, precious metals and gems and scientific experiments.
  • In Australia and New Zealand, grams are used for measuring food portions and ingredients, postal items, drugs and medicines, precious metals and gems and scientific experiments.
  • In China, grams are used for measuring food portions and ingredients, postal items, drugs and medicines, precious metals and gems and scientific experiments.

History of Grams

Grams have a long history that dates back to ancient times. Here are some highlights of the history of grams:

  • The gram was originally defined in 1795 as the absolute weight of a volume of pure water equal to the cube of the hundredth part of a meter at the temperature of melting ice.
  • The gram was later changed to be the weight of a volume of pure water equal to the cube of the hundredth part of a meter at the temperature of maximum density of water (4 °C).
  • The gram was part of the centimeter–gram–second system of units (CGS) that was developed in the 19th century as an alternative to the meter–kilogram–second system of units (MKS).
  • The gram was replaced by the kilogram as the base unit of mass in the SI system that was adopted in 1960 as an international standard for measurements.
  • The gram was redefined in terms of the kilogram and the Planck constant in 2019 as part of a major revision of the SI system.

Example Conversions of Grams to Other Units

Here are some examples of conversions of grams to other units of weight:

  • 1 g = 0.035274 oz
  • 1 g = 0.002205 lb
  • 1 g = 0.0000011 ton
  • 1 g = 0.001 kg
  • 1 g = 1000 mg
  • 1 g = 1000000 µg
  • 1 g = 0.032151 troy oz
  • 1 g = 0.032151 apothecaries’ oz
  • 1 g = 0.035274 Spanish oz
  • 1 g = 0.033814 French oz
Grams also can be marked as grammes (alternative British English spelling in UK).



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