Stones to Kilograms
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1 stone (st) = 6.35029318 kilogram (kg). Stone (st) is a unit of Weight used in Standard system. Kilogram (kg) is a unit of Weight used in Metric system.

Stones: A Unit of Weight

Stones are a unit of weight that are used in the British imperial system and the US customary system. Stones are derived from the use of stones for weights, a practice that dates back to ancient times. The word stone comes from the Old English stan, meaning stone, and the abbreviation st comes from the Latin word statera, meaning balance.

Definition of the Stone

The stone is defined as 14 pounds avoirdupois, which is equal to 6.35 kilograms or 224 ounces. The avoirdupois pound is defined as 7000 grains, which is a unit of mass based on the weight of a grain of wheat. The stone is one-eighth of a hundredweight, which is 112 pounds, and one-quarter of a quarter, which is 28 pounds.

The stone is not a legal unit of measurement in most countries, except for the United Kingdom and Ireland, where it is still used for measuring body weight. In other countries, such as the United States, Canada, Australia and New Zealand, the stone is sometimes used informally for expressing human weight.

How to Convert Stones

Stones can be converted to other units of weight by using conversion factors or formulas. Here are some examples of how to convert stones to other units of weight in the US customary system and the SI system:

• To convert stones to pounds, multiply by 14. For example, 10 st = 10 x 14 = 140 lb.
• To convert stones to ounces, multiply by 224. For example, 5 st = 5 x 224 = 1120 oz.
• To convert stones to tons (short), divide by 142.857. For example, 20 st = 20 / 142.857 = 0.14 ton.
• To convert stones to kilograms, multiply by 6.35. For example, 8 st = 8 x 6.35 = 50.8 kg.
• To convert stones to grams, multiply by 6350. For example, 3 st = 3 x 6350 = 19050 g.
• To convert stones to milligrams, multiply by 6350000. For example, 2 st = 2 x 6350000 = 12700000 mg.

Where Stones are Used

Stones are used in different countries and regions for different applications and purposes. Here are some examples of where stones are used:

• In the United Kingdom and Ireland, stones are used for measuring body weight and livestock weight. For example, a person may weigh 11 st or a cow may weigh 40 st.
• In the United States, stones are sometimes used for measuring body weight and sports equipment. For example, a boxer may weigh 12 st or a bowling ball may weigh 1 st.
• In Canada, Australia and New Zealand, stones are sometimes used for measuring body weight and agricultural products. For example, a person may weigh 9 st or a bag of potatoes may weigh 2 st.
• In some African countries, such as Kenya and Uganda, stones are sometimes used for measuring crops and commodities. For example, a sack of maize may weigh 4 st or a bunch of bananas may weigh 1 st.

History of Stones

Stones have a long history that dates back to ancient times. Here are some highlights of the history of stones:

• The stone was an ancient unit of measurement that was based on the weight of a natural stone or rock. It varied from place to place and from time to time depending on the type and size of the stone used.
• The stone was used in different systems of measurement, such as the Roman system, the Anglo-Saxon system, the English system and the Scottish system. It ranged from about 5 pounds to about 40 pounds depending on the region and the object weighed.
• The stone was standardized by royal statutes and international agreements in different periods of history. For example, in 1389 a royal statute fixed the stone of wool at 14 pounds in England; in 1824 an international agreement defined the avoirdupois pound as exactly 453.59237 grams; in 1835 an act permitted using a stone of 14 pounds for trade in Britain; in 1959 an international agreement defined the international avoirdupois ounce as exactly 28.349523125 grams.

Example Conversions of Stones to Other Units

Here are some examples of conversions of stones to other units of weight:

• 1 st = 14 lb
• 1 st = 224 oz
• 1 st = 0.007143 ton
• 1 st = 6.35 kg
• 1 st = 6350 g
• 1 st = 6350000 mg
• 1 st = 0.714286 troy oz
• 1 st = 0.714286 apothecaries’ oz
• 1 st = 0.5 Spanish oz
• 1 st = 0.458333 French oz

Kilograms: A Unit of Weight

Definition of the Kilogram

A kilogram is a unit of weight that measures how much force an object or substance exerts on a scale due to gravity. It is equal to the mass of the International Prototype of the Kilogram (IPK), a cylinder of platinum-iridium alloy stored at the International Bureau of Weights and Measures in France. One kilogram can also be written as kg or 1000 g.

History of the Kilogram

The kilogram was originally defined in 1795 during the French Revolution as the mass of one litre of water at 4 °C, which was determined to be 18841 grains. In 1799, the Kilogramme des Archives, a platinum artifact, replaced it as the standard of weight. In 1889, the IPK became the new standard of the unit of weight for the metric system and remained so for 130 years, until the current definition was adopted in 2019.

The kilogram, as well as other metric units of weight, such as the gram and the tonne, were introduced in the 19th century as part of the decimal system of measurement that aimed to simplify and unify the units used in science and commerce. The kilogram was officially adopted by the International System of Units (SI) in 1960 as one of the seven base units.

How to Convert Kilograms

To convert kilograms to other units of weight, we need to use conversion factors that relate the kilogram to the desired unit. For example, to convert kilograms to pounds, we need to know that one pound is equal to 0.45359237 kg. Therefore, one kilogram is equal to 2.2046226218 pounds.

Here are some common conversion factors for kilograms:

• 1 kg = 1000 g
• 1 kg = 2.2046226218 lb
• 1 kg = 35.27396195 oz
• 1 kg = 0.001 t
• 1 kg = 0.1574730444 st

To convert from other units of weight to kilograms, we need to use the inverse of these conversion factors. For example, to convert pounds to kilograms, we need to divide by 2.2046226218.

Where Kilograms are Used

The kilogram is a unit of weight that is widely used to measure the weight of objects and substances such as food, clothes, animals, metals and chemicals. For example, an adult human body has an average weight of about 62 kg.

The kilogram is also used to measure the weight of some physical quantities such as force, pressure and torque. For example, one newton (N) is equal to one kilogram times one meter per second squared (kg x m/s²).

Example Conversions of Kilograms to Other Units

Here are some examples of how to convert kilograms to other units of weight using the conversion factors given above:

• 2 kg = 2 x 1000 g = 2000 g
• 3 kg = 3 x 2.2046226218 lb = 6.6138678654 lb
• 4 kg = 4 x 35.27396195 oz = 141.0958478 oz
• 5 kg = 5 x 0.001 t = 0.005 t
• 6 kg = 6 x 0.1574730444 st = 0.9448382664 st

Conclusion

The kilogram is a unit of weight that measures how much force an object or substance exerts on a scale due to gravity. It is equal to the mass of the IPK, a cylinder of platinum-iridium alloy stored in France. The kilogram is widely used to measure the weight of objects and substances such as food, clothes, animals, metals and chemicals, as well as some physical quantities such as force, pressure and torque. To convert kilograms to other units of weight, we need to use conversion factors that relate the kilogram to the desired unit.