Carat to Stone Converter
1 ct = 0.0000314946 st
FORMULA
1 ct = 0.0000314946 st
CONVERSION TABLE
| Carat (ct) | Stone (st) |
|---|---|
| 1 ct | 0.0000314946 st |
| 5 ct | 0.000157473 st |
| 10 ct | 0.0003149461 st |
| 25 ct | 0.0007873652 st |
| 50 ct | 0.0015747304 st |
| 100 ct | 0.0031494609 st |
| 250 ct | 0.0078736522 st |
| 500 ct | 0.015747 st |
| 1,000 ct | 0.031495 st |
COMMON VALUES
RELATED CONVERSIONS
About Carat (ct)
The metric carat equals exactly 200 milligrams and is the universal standard for measuring gemstone weight. Adopted internationally in 1907, the carat originated from the carob seed, which ancient gem traders believed had remarkably uniform weight. A one-carat diamond is approximately 6.5 mm in diameter.
About Stone (st)
Equal to 14 pounds (6.35 kg), the stone is the traditional body weight unit in the United Kingdom and Ireland. Britons commonly express their weight as, for example, '11 stone 4' rather than in pounds or kilograms. The unit dates back to medieval wool trade, where actual stones were used as counterweights.
How to Convert Carat to Stone
The conversion formula is: 1 ct = 0.0000314946 st. To convert from Carat (ct) to Stone (st), use the formula above or the interactive converter at the top of this page.
FAQ
How many Stone in 1 Carat?
1 Carat (ct) equals 0.0000314946 Stone (st).
How to convert Carat to Stone?
Multiply the Carat value by 0.0000314946 to get the equivalent in Stone. Formula: 1 ct = 0.0000314946 st
What is the formula for Carat to Stone conversion?
1 ct = 0.0000314946 st
Glossary
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Kilogram
The SI base unit of mass, defined by the Planck constant.
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Troy Weight
A system of weights used for precious metals and gemstones.
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Avoirdupois
The standard system of weights based on the 16-ounce pound, used for everyday goods.
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Ounce
A dual-use imperial unit: as a mass unit (avoirdupois), 1 oz = 28.3495 g (1/16 lb); as a volume unit, 1 US fluid ounce = 29.5735 mL.
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Pound
An imperial unit of mass equal to exactly 453.59237 grams (16 avoirdupois ounces), also used as a unit of force (pound-force) equal to 4.44822 newtons.