st

What is a Stone?

Definition

A stone is a unit of mass equal to 14 pounds or approximately 6.35 kilograms. It is primarily used in the UK and Ireland for measuring body weight.

Popular Stone Conversions

Most common conversions from Stones

1 st = 6.3503 kg Stone to Kilograms 1 st = 6,350.29 g Stone to Grams 1 st = 6,350,293.18 mg Stone to Milligrams 1 st = 0.0063502932 t Stone to Metric Tons 1 st = 14 lb Stone to Pounds 1 st = 224 oz Stone to Ounces

History

The stone has been used in trade since ancient times. The 14-pound standard was established in England in 1389 for weighing wool.

Common Uses

Body weight in the UK and Ireland
Boxing and wrestling weight classes in the UK
Historical trade measurements
Informal weight discussions

Fun Facts

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The average UK adult weighs about 11-12 stone

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Different commodities historically used different stone weights

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The stone is rarely used outside the British Isles

All Stone Conversions

Stones to Kilograms st → kg Stones to Grams st → g Stones to Milligrams st → mg Stones to Metric Tons st → t Stones to Pounds st → lb Stones to Ounces st → oz Stones to US Tons st → ton Stones to Imperial Tons st → long ton Stones to Micrograms st → μg