Stone (st)
The stone is a unit of weight, used for body weight measurement in the UK and Ireland. Its symbol is st.
st
kg
1 stone equals
| Kilograms | 6.35029 kg |
| Pounds | 14 lb |
| Grams | 6,350.29 g |
| Ounces | 224 oz |
About the stone
The stone has been used in the British Isles since the 14th century for trade goods. It was standardized at 14 pounds (6.35 kg) in the Weights and Measures Act of 1835.
In everyday use the stone appears in body weight measurement in the UK and Ireland. As a point of reference: the average adult male in the UK weighs about 13 stone.