Calculator Kg: Lbs: Reset This Mass Converter is Really Cool. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. pounds in a kilogram weight metric units also list kg to lbs conversion table. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Conversion of units describes equivalent units of mass in other systems.Ĭ provides an online conversion calculator for all types of measurement units. A gram is defined as one thousandth of a kilogram. The kilogram or kilogramme, (symbol: kg) is the SI base unit of mass. An avoirdupois pound is equal to 16 avoirdupois ounces and to exactly 7,000 grains. In the United Kingdom, the use of the international pound was implemented in the Weights and Measures Act 1963. The definition of the international pound was agreed by the United States and countries of the Commonwealth of Nations in 1958. The international avoirdupois pound is equal to exactly 453.59237 grams. The most commonly used pound today is the international avoirdupois pound. The pound (abbreviation: lb) is a unit of mass or weight in a number of different systems, including English units, Imperial units, and United States customary units. Kg to pounds, or enter any two units below: Enter two units to convert From: This is to provide consistency when communicating with other countries, since most other countries use the kilogram as their measurement of mass/weight, rather than the pound or other units of weight.You can do the reverse unit conversion from Both countries use the kilogram as well in many contexts such as science, the military, industry, and more. They are not used much anymore in the United Kingdom (UK), since the UK started the process of metrication back in 1965. Pounds are the primary unit of weight used in the United States for everyday purposes. This definition was updated in 1959, and this pound was based on a prototype weight that could be divided into 16 ounces. It originated from the Roman libra, and went through a number of different definitions until the development of the international avoirdupois pound in the 13th century. The definition of the pound has changed throughout the course of history. It is equivalent to 16 avoirdupois ounces. The definition of the pound (lb) is based on the international avoirdupois pound, which is defined as exactly 0.45359237 kilograms. What is a poundĪ pound is a unit of mass in the US customary system of units. While the US also uses SI in many other contexts, it has still not officially adopted SI. Most countries around the world have adopted SI with one notable exception being the United States, which still largely uses the US customary system in everyday life. The kilogram is widely used throughout the world in everyday as well as scientific contexts. The reason the base unit is the kilogram rather than the gram is because when this physical standard of mass was created in 1799, there were no methods for measuring masses that were as small as a gram. The kilogram is the only SI base unit that has an SI prefix (kilo-). The prototype was created in 1875 and adopted in 1889, and this definition of the kilogram lasted until 2019, when it was redefined in terms of the Planck constant, the speed of light, and the atomic transition frequency of cesium. It was redefined a few more times, and in 1875, one of the longest-lasting definitions of the kilogram was produced: a platinum alloy object about the size of a golf ball named the International Prototype of the Kilogram. In 1795 it was defined as the mass of one cubic centimetre of water at the melting point of ice. In 1793, it was defined as the mass of 1 litre of water. The definition of the kilogram has changed a number of times throughout the course of history. The redefinition bases it on physical constants that never change. The redefinition of the kilogram is intended to improve its definition, since the physical platinum alloy degrades over time. The actual value of the mass remains mostly consistent with the previous definition, which was based on an actual physical object made of a platinum alloy. The kilogram was redefined in 2019 to be based on three physical constants speed of light, the atomic transition frequency of cesium, and the Planck constant. 170 lbs ÷ 2.204623 = 77.111 kg What is a kilogramĪ kilogram (kg) is the base unit of mass in the International System of Units.
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