
Carats to Tonnes
Converter 
Convert Tonnes to Carats (tonne to ct)
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Conversion Table
carats
to tonnes 
ct  tonne 
100000 ct  0.02 tonne 
200000 ct  0.04 tonne 
300000 ct  0.06 tonne 
400000 ct  0.08 tonne 
500000 ct  0.1 tonne 
600000 ct  0.12 tonne 
700000 ct  0.14 tonne 
800000 ct  0.16 tonne 
900000 ct  0.18 tonne 
1000000 ct  0.2 tonne 
1100000 ct  0.22 tonne 
1200000 ct  0.24 tonne 
1300000 ct  0.26 tonne 
1400000 ct  0.28 tonne 
1500000 ct  0.3 tonne 
1600000 ct  0.32 tonne 
1700000 ct  0.34 tonne 
1800000 ct  0.36 tonne 
1900000 ct  0.38 tonne 
2000000 ct  0.4 tonne 
How to convert 1 carat (ct) = 0.0000002 tonne (tonne).
Carat (ct) is a unit of Weight used in Standard system.
Tonne (tonne) 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
Tonnes: A Unit of Weight
Tonnes are a unit of weight that are used for measuring large masses, such as vehicles, ships, and buildings. Tonnes are also known as metric tons or megagrams. The symbol for tonne is t.
Definition of the Tonne
The tonne is defined as 1000 kilograms, which is the base unit of mass in the International System of Units (SI). The tonne is also equal to one million grams or one billion milligrams.
The tonne is equal to about 2204.6 avoirdupois pounds or 1.1023 short tons. The tonne is also equal to about 0.9842 long tons or 0.9072 tonnesforce.
How to Convert Tonnes
Tonnes can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert tonnes to other units of weight in the US customary system and the SI system:
 To convert tonnes to avoirdupois pounds, multiply by 2204.6226. For example, 10 t = 10 x 2204.6226 = 22046.226 lb.
 To convert tonnes to short tons, multiply by 1.1023. For example, 5 t = 5 x 1.1023 = 5.5115 st.
 To convert tonnes to long tons, multiply by 0.9842. For example, 20 t = 20 x 0.9842 = 19.684 lt.
 To convert tonnes to kilograms, multiply by 1000. For example, 15 t = 15 x 1000 = 15000 kg.
 To convert tonnes to grams, multiply by 1000000. For example, 25 t = 25 x 1000000 = 25000000 g.
 To convert tonnes to milligrams, multiply by 1000000000. For example, 30 t = 30 x 1000000000 = 30000000000 mg.
Where Tonnes are Used
Tonnes are used in different countries and regions for different applications and purposes. Here are some examples of where tonnes are used:
 In most countries that use the SI system, tonnes are used for measuring weight, especially for large masses, such as vehicles, ships, and buildings.
 In the United States, tonnes are sometimes used for measuring weight, especially for international trade and commerce.
 In Canada, Australia and New Zealand, tonnes are sometimes used for measuring weight, especially for international trade and commerce.
 In the United Kingdom, tonnes are sometimes used for measuring weight, especially for international trade and commerce.
 In India, tonnes are sometimes used for measuring weight, especially for international trade and commerce.
History of Tonnes
Tonnes have a relatively short history that dates back to the late 18th century. Here are some highlights of the history of tonnes:
 The tonne was originally based on the weight of a cubic meter of water at its maximum density of four degrees Celsius, which was approximately equal to 1000 kilograms.
 The tonne was part of the original metric system that was introduced in France in 1795 as a decimalbased system of measurement that was designed to replace the traditional units that varied from region to region.
 The tonne was adopted by many countries around the world as part of the International System of Units (SI) that was established in 1960 as a universal system of measurement that was based on seven base units and several derived units.
 The tonne was also referred to as the metric ton or the megagram in some countries and contexts to distinguish it from the nonmetric units of the short ton and the long ton.
Example Conversions of Tonnes to Other Units
Here are some examples of conversions of tonnes to other units of weight:
 1 t = 2204.6226 lb
 1 t = 1.1023 st
 1 t = 0.9842 lt
 1 t = 1000 kg
 1 t = 1000000 g
 1 t = 1000000000 mg
 1 t = 32.1507 oz t
 1 t = 643.0149 dwt
 1 t = 15432.3584 gr
 1 t = 0.001 kN
Tonne also can be marked as Metric Ton.
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