
Carats to Milligrams
Converter 
Convert Milligrams to Carats (mg to ct)
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Conversion Table
carats
to milligrams 
ct  mg 
1 ct  200 mg 
2 ct  400 mg 
3 ct  600 mg 
4 ct  800 mg 
5 ct  1000 mg 
6 ct  1200 mg 
7 ct  1400 mg 
8 ct  1600 mg 
9 ct  1800 mg 
10 ct  2000 mg 
11 ct  2200 mg 
12 ct  2400 mg 
13 ct  2600 mg 
14 ct  2800 mg 
15 ct  3000 mg 
16 ct  3200 mg 
17 ct  3400 mg 
18 ct  3600 mg 
19 ct  3800 mg 
20 ct  4000 mg 
How to convert 1 carat (ct) = 200 milligram (mg).
Carat (ct) is a unit of Weight used in Standard system.
Milligram (mg) is a unit of Weight used in Metric system. Carats: A Unit of Weight
Carats are a unit of weight that are used for measuring gemstones and pearls. Carats are derived from the Arabic word qirat, which means a small weight or a seed. The symbol for carat is ct.
Definition of the Carat
The carat is defined as 200 milligrams, which is one fifth of a gram. The carat is divided into 100 points, which are each 2 milligrams. For example, a diamond that weighs 0.5 carat can also be expressed as 50 points or 100 milligrams.
The carat is not a legal unit of measurement in most countries, except for some that use the metric system, such as France, Belgium, Italy and Switzerland. In other countries, such as the United States, Canada, Australia and New Zealand, the carat is used as a standard unit for the diamond industry.
How to Convert Carats
Carats can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert carats to other units of weight in the US customary system and the SI system:
 To convert carats to ounces, divide by 141.7476. For example, 10 ct = 10 / 141.7476 = 0.071 oz.
 To convert carats to pounds, divide by 2267.962. For example, 20 ct = 20 / 2267.962 = 0.009 lb.
 To convert carats to tons (short), divide by 4535923.7. For example, 50 ct = 50 / 4535923.7 = 0.000011 ton.
 To convert carats to grams, divide by 5. For example, 100 ct = 100 / 5 = 20 g.
 To convert carats to kilograms, divide by 5000. For example, 200 ct = 200 / 5000 = 0.04 kg.
 To convert carats to milligrams, multiply by 200. For example, 25 ct = 25 x 200 = 5000 mg.
Where Carats are Used
Carats are used in different countries and regions for different applications and purposes. Here are some examples of where carats are used:
 In most countries that use the metric system, carats are used for measuring gemstones and pearls, such as diamonds, rubies, sapphires, emeralds and pearls.
 In the United States, carats are used for measuring gemstones and pearls, especially for diamonds and diamond jewelry.
 In Canada, Australia and New Zealand, carats are used for measuring gemstones and pearls, especially for diamonds and diamond jewelry.
 In China, carats are used for measuring gemstones and pearls, especially for jade and jade jewelry.
 In India, carats are used for measuring gemstones and pearls, especially for gold and gold jewelry.
History of Carats
Carats have a long history that dates back to ancient times. Here are some highlights of the history of carats:
 The carat was originally based on the weight of a carob seed, which was used as a counterweight in balance scales by ancient traders and jewelers. The carob seed was believed to have a uniform weight of about one fifth of a gram.
 The carat was used in different systems of measurement, such as the Roman system, the Byzantine system, the Arabic system and the Ottoman system. It varied from about 180 milligrams to about 220 milligrams depending on the region and the time period.
 The carat was standardized by international agreements in different periods of history. For example, in 1575 an agreement between France and England fixed the carat at 205 milligrams; in 1871 an agreement between Parisian jewelers fixed the carat at 205.3 milligrams; in 1907 an agreement between the International Committee of Weights and Measures fixed the carat at exactly 200 milligrams.
Example Conversions of Carats to Other Units
Here are some examples of conversions of carats to other units of weight:
 1 ct = 0.007055 oz
 1 ct = 0.000441 lb
 1 ct = 0.00000022 ton
 1 ct = 0.2 g
 1 ct = 200 mg
 1 ct = 200000 µg
 1 ct = 0.643 troy oz
 1 ct = 0.643 apothecaries’ oz
 1 ct = 0.706 Spanish oz
 1 ct = 0.671 French oz
Milligrams: A Unit of Weight
Milligrams are a unit of weight that are used in the International System of Units (SI), also known as the metric system. Milligrams are derived from the Latin word mille, which means thousand, and the French word gramme, which means weight. The symbol for milligram is mg.
Definition of the Milligram
The milligram is defined as one onethousandth of a gram, which is one onemillionth 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 milligram is a very small unit of weight, equivalent to about 0.000035 ounces or 0.000002 pounds. It is commonly used for measuring small masses, such as medicines, chemicals, vitamins, minerals and microorganisms.
How to Convert Milligrams
Milligrams can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert milligrams to other units of weight in the US customary system and the SI system:
 To convert milligrams to ounces, divide by 28349.523125. For example, 1000 mg = 1000 / 28349.523125 = 0.035 oz.
 To convert milligrams to pounds, divide by 453592.37. For example, 5000 mg = 5000 / 453592.37 = 0.011 lb.
 To convert milligrams to tons (short), divide by 907184740. For example, 10000 mg = 10000 / 907184740 = 0.000011 ton.
 To convert milligrams to grams, divide by 1000. For example, 2000 mg = 2000 / 1000 = 2 g.
 To convert milligrams to kilograms, divide by 1000000. For example, 3000 mg = 3000 / 1000000 = 0.003 kg.
 To convert milligrams to micrograms, multiply by 1000. For example, 50 mg = 50 x 1000 = 50000 µg.
Where Milligrams are Used
Milligrams are used in different countries and regions for different applications and purposes. Here are some examples of where milligrams are used:
 In most countries that use the SI system, milligrams are used for measuring small masses, such as medicines, chemicals, vitamins, minerals and microorganisms.
 In the United States, milligrams are sometimes used for measuring small masses, such as medicines, chemicals, vitamins, minerals and microorganisms.
 In Canada, milligrams are used for measuring small masses, such as medicines, chemicals, vitamins, minerals and microorganisms.
 In Australia and New Zealand, milligrams are used for measuring small masses, such as medicines, chemicals, vitamins, minerals and microorganisms.
 In China, milligrams are used for measuring small masses, such as medicines, chemicals, vitamins, minerals and microorganisms.
History of Milligrams
Milligrams have a long history that dates back to ancient times. Here are some highlights of the history of milligrams:
 The milligram was originally based on the weight of a grain of wheat or barley, which was used as a unit of mass in ancient civilizations such as Egypt, Mesopotamia and Greece.
 The milligram was part of the gramcentimetersecond system of units (CGS) that was developed in the 19th century as an alternative to the meterkilogramsecond system of units (MKS).
 The milligram 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 milligram 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 Milligrams to Other Units
Here are some examples of conversions of milligrams to other units of weight:
 1 mg = 0.000035 oz
 1 mg = 0.000002 lb
 1 mg = 0.0000000011 ton
 1 mg = 0.001 g
 1 mg = 0.000001 kg
 1 mg = 1000 µg
 1 mg = 0.000032 troy oz
 1 mg = 0.000032 apothecaries’ oz
 1 mg = 0.000035 Spanish oz
 1 mg = 0.000034 French oz
Milligrams also can be marked as Milligrammes (alternative British English spelling in UK).
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