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Convert Stones to Carats

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Measurement

Weight Converter
10 sig. figures
Formula1 st ร— 31751.4659 = 31751.4659 ct
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About Weight Conversions

Global trade, healthcare, and science all depend on accurate mass. The kilogram became the SI base unit, redefined in 2019 against the Planck constant, yet pounds, ounces, and stones still run much of industry. Shipping shows the stakes: a wrong weight on a customs declaration or freight calculation brings fines or delays. Pharmacy and chemistry push the other way, where a milligram off changes a dose or a reaction's stoichiometry. The range below spans atomic mass units used in molecular chemistry up to metric tons used in bulk freight, every factor tied to the NIST Reference on Constants.

Quick Conversions

StonesCarats
1 st31751.5 ct
2 st63502.9 ct
5 st158757 ct
10 st317515 ct
25 st793787 ct
50 st1587570 ct
100 st3175150 ct
250 st7937870 ct
500 st15875700 ct
1000 st31751500 ct
Unit NameSymbolPer 1 Stone
Atomic Mass Unitu3.82424 ร— 10ยฒโท
Caratct31751.5
Gramg6350.29
Kilogramkg6.35029
Long Tonlong tn0.00625
Metric Tont0.00635029
Milligrammg6350290
Ounceoz224
Poundlb14
Short TonUS ton0.007
Stonest1

Frequently Asked Questions

How do I convert Stones to Carats?

To convert Stones to Carats, use the conversion where 1 Stone (st) = 31751.5 Carats (ct). For example, 1 Stone = 31751.5 Carats.

What are common Stone to Carat conversions?

Here are common conversions: 1 Stones = 31751.5 Carats, 5 Stones = 158757 Carats, 10 Stones = 317515 Carats, 25 Stones = 793787 Carats, 50 Stones = 1587570 Carats, 100 Stones = 3175150 Carats.

When would I need to convert Stones to Carats?

Weight conversions come up in international shipping, recipe scaling between metric and imperial measurements, fitness tracking across different gym equipment standards, and scientific research that needs precise mass measurements.

How precise are the conversions?

All conversions use exact factors verified against NIST and ISO standards with up to 10 significant figures of precision. Results are calculated using IEEE 754 double-precision arithmetic, which provides approximately 15-17 significant digits. For temperature and other non-linear conversions, exact formulas are used rather than approximations.

Sources

Read our full methodology โ†’