Let's see how both units in this conversion are defined, in this case Kilograms and Stones: Kilogram (kg)

The stone is a unit of mass (acceptable for use as weight on Earth) and is part of the imperial system of units. It has the symbol st.Let's see how both units in this conversion are defined, in this case Stones and Kilograms: Stone (st) In Europe, up until the 19th century, the stone was frequently used in the trade industry to measure weight. Each country had their own weight of the stone which varied between regions and what was being traded. As a result, the metric system was adopted in most European countries. Parents often worry about the weight of their children. Are children too light or are they too heavy? Numerous studies have shown that many children are overweight. 14% of the boys and 17% of the girls in the UK are too heavy. Unfortunately this problem is seeming to get worse. In the table below you can see an overview of the average healthy weights of children between 2 and 16 years old. The stone or stone weight (abbreviation: st) is an English and imperial unit of mass now equal to 14 pounds (6.35029318 kg). England and other Germanic-speaking countries of northern Europe formerly used various standardised "stones" for trade, with their values ranging from about 5 to 40 local pounds (roughly 3 to 15 kg) depending on the location and objects weighed. The United Kingdom's imperial system adopted the wool stone of 14 pounds in 1835. Frequently asked questions to convert 12.5 Kilograms into Stones The kilogram or kilogramme, (symbol: kg) is the SI base unit of mass. A gram is defined as one thousandth of a kilogram. Conversion of units describes equivalent units of mass in other systems.

In the UK and Ireland people will often use stone and pounds (e.g. 11 st 5 lbs) to express their weight. In contrast people in the United States will most commonly use just pounds (eg. 159 lbs). The kilogram is the base SI unit for mass (acceptable for use as weight on Earth). It uses the symbol kg. Although the Stone has not been recognised in the UK as a unit of weight since 1985, it is still the most common and popular way of expressing human weight in this country. The kilogram (or kilogramme, SI symbol: kg), also known as the kilo, is the fundamental unit of mass in the International System of Units. Defined as being equal to the mass of the International Prototype Kilogram (IPK), that is almost exactly equal to the mass of one liter of water. The kilogram is the only SI base unit using an SI prefix ("kilo", symbol "k") as part of its name. The stability of kilogram is really important, for four of the seven fundamental units in the SI system are defined relative to it. Frequently asked questions to convert 12.5 Stones into KilogramsIn historical times actual stones were used as weights, a practice that was adopted worldwide for more than 2000 years.

The kilogram (or kilogramme, SI symbol: kg), also known as the kilo, is the fundamental unit of mass in the International System of Units. Defined as being equal to the mass of the International Prototype Kilogram (IPK), that is almost exactly equal to the mass of one liter of water. The kilogram is the only SI base unit using an SI prefix ("kilo", symbol "k") as part of its name. The stability of kilogram is really important, for four of the seven fundamental units in the SI system are defined relative to it. Stone (st) In England in 1389 a stone of wool was characterized as weighing fourteen pounds (lbs). Despite the fact that a stone of different materials would not necessarily weigh exactly fourteen pounds, the stone became accepted as weighing exactly 14 lbs. The stone or stone weight (abbreviation: st) is an English and imperial unit of mass now equal to 14 pounds (6.35029318 kg). England and other Germanic-speaking countries of northern Europe formerly used various standardised "stones" for trade, with their values ranging from about 5 to 40 local pounds (roughly 3 to 15 kg) depending on the location and objects weighed. The United Kingdom's imperial system adopted the wool stone of 14 pounds in 1835. Kilogram (kg) It is the only SI base unit with the prefix as part of its name (kilo). The word is derived itself from the French 'kilogramme' which was itself built from the Greek 'χίλιοι' or 'khilioi' for 'a thousand' and the Latin 'gramma' for 'small weight'.A stone is a unit of mass within the Imperial units system used in the United Kingdom and Ireland, and formerly in a number of Commonwealth countries. It is equal to 14 pounds avoirdupois, i.e. 6.35029318 kilograms.