Convert carat to stone (US)
Please provide values below to convert carat [car, ct] to stone (US) [st (US)], or Convert stone (US) to carat.
How to Convert Carat to Stone (Us)
1 car, ct = 3.14946088835539e-05 st (US)
Example: convert 15 car, ct to st (US):
15 car, ct = 15 × 3.14946088835539e-05 st (US) = 0.000472419133253309 st (US)
Carat to Stone (Us) Conversion Table
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Carat
A carat is a unit of mass used to measure gemstones and pearls, equal to 200 milligrams.
History/Origin
The carat originated from the carob seed, which was historically used as a counterweight in balance scales due to its uniform weight. The term has been used since the 16th century to measure precious stones.
Current Use
Today, the carat is primarily used in the jewelry industry to specify the weight of diamonds and other gemstones, with 1 carat equaling 0.2 grams.
Stone (Us)
A stone (st) is a unit of weight primarily used in the United States, equal to 14 pounds or approximately 6.35 kilograms.
History/Origin
The stone has origins in medieval England, where it was used as a convenient weight measure for trade and commerce. Its value varied regionally before standardization, and it has been used historically for measuring human body weight and other goods.
Current Use
Today, the stone is mainly used in the UK and Ireland for body weight measurement, while in the United States, it is rarely used and often replaced by pounds or kilograms in most contexts.