Convert carat [car,ct] to ton (assay) (UK) [AT (UK)] Online | Free weight-and-mass Converter

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Carat [car, ct]


The carat is a unit of mass used primarily for measuring gemstones and pearls.



  • 1 carat = 200 milligrams



  • 1 carat = 0.2 grams



  • Symbol: ct or sometimes car



  • Subdivided into 100 points, so a 0.25 carat gem is 25 points.



Key Facts:



  • 1 ct = 0.2 g = 200 mg



  • Standardized internationally since 1907



  • Commonly used for diamonds, gemstones, and pearls



  • Not to be confused with karat, which measures gold purity



The carat provides a precise and standardized way to describe the weight of precious stones in the jewelry industry.



Ton (Assay) (UK) [AT (UK)]


The assay ton (UK) is a traditional British unit of weight used mainly in the mining industry for assaying ores. It is specifically designed to standardize the quantity of ore tested to determine its precious metal content.


One UK assay ton is equal to 28 pounds (about 12.7 kilograms). This is different from the British long ton (2,240 pounds) and allows for consistent sampling in metallurgical testing.


The assay ton (UK) provides a practical and uniform measurement for assessing the value of mineral deposits, especially in the context of gold and silver extraction.



Popular Weight-and-mass Unit Conversions

Convert carat [car,ct] to Other Weight-and-mass Units

carat [car,ct] to kilogram kg
carat [car,ct] to gram [g]
carat [car,ct] to milligram [mg]
carat [car,ct] to ton (metric) [t]
carat [car,ct] to pound
carat [car,ct] to ounce [oz]
carat [car,ct] to ton (short) [ton (US)]
carat [car,ct] to ton (long) [ton (UK)]
carat [car,ct] to Atomic mass unit [u]
carat [car,ct] to exagram [Eg]
carat [car,ct] to petagram [Pg]
carat [car,ct] to teragram [Tg]
carat [car,ct] to gigagram [Gg]
carat [car,ct] to megagram [Mg]
carat [car,ct] to hectogram [hg]
carat [car,ct] to dekagram [dag]
carat [car,ct] to decigram [dg]
carat [car,ct] to centigram [cg]
carat [car,ct] to microgram [µg]
carat [car,ct] to nanogram [ng]
carat [car,ct] to picogram [pg]
carat [car,ct] to femtogram [fg]
carat [car,ct] to attogram [ag]
carat [car,ct] to dalton
carat [car,ct] to kilogram-force square second/meter
carat [car,ct] to kilopound [kip]
carat [car,ct] to kip
carat [car,ct] to slug
carat [car,ct] to pound-force square second/foot
carat [car,ct] to pound (troy or apothecary)
carat [car,ct] to poundal [pdl]
carat [car,ct] to ton (assay) (US) [AT (US)]
carat [car,ct] to ton (assay) (UK) [AT (UK)]
carat [car,ct] to kiloton (metric) [kt]
carat [car,ct] to quintal (metric) [cwt]
carat [car,ct] to hundredweight (US)
carat [car,ct] to hundredweight (UK)
carat [car,ct] to quarter (US) [qr (US)]
carat [car,ct] to quarter (UK) [qr (UK)]
carat [car,ct] to stone (US)
carat [car,ct] to stone (UK)
carat [car,ct] to tonne [t]
carat [car,ct] to pennyweight [pwt]
carat [car,ct] to scruple (apothecary) [s.ap]
carat [car,ct] to grain [gr]
carat [car,ct] to gamma
carat [car,ct] to talent (Biblical Hebrew)
carat [car,ct] to mina (Biblical Hebrew)
carat [car,ct] to shekel (Biblical Hebrew)
carat [car,ct] to bekan (Biblical Hebrew)
carat [car,ct] to gerah (Biblical Hebrew)
carat [car,ct] to talent (Biblical Greek)
carat [car,ct] to mina (Biblical Greek)
carat [car,ct] to tetradrachma (Biblical Greek)
carat [car,ct] to didrachma (Biblical Greek)
carat [car,ct] to drachma (Biblical Greek)
carat [car,ct] to denarius (Biblical Roman)
carat [car,ct] to assarion (Biblical Roman)
carat [car,ct] to quadrans (Biblical Roman)
carat [car,ct] to lepton (Biblical Roman)
carat [car,ct] to Planck mass
carat [car,ct] to Electron mass (rest)
carat [car,ct] to Muon mass
carat [car,ct] to Proton mass
carat [car,ct] to Neutron mass
carat [car,ct] to Deuteron mass
carat [car,ct] to Earths mass
carat [car,ct] to Suns mass