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IEVref:112-02-06ID:
Language:enStatus: Standard
Term: kilogram
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Symbol: kg
Definition: SI unit of mass, taking the fixed numerical value of the Planck constant h to be 6,62607015נ10−34 when expressed in the unit s−1m2kg, where the metre and the second are chosen as units of length and time, respectively

Note 1 to entry: The definition in the SI Brochure is: "The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6,62607015נ10−34 when expressed in the unit Js, which is equal to kgm2s−1, where the metre and the second are defined in terms of c and ΔνCs."

Note 2 to entry: The definition of the kilogram in IEV 112-02-06:2010-01 was: "SI unit of mass, equal to the mass of the object called the “international prototype of the kilogram” kept at the International Bureau of Weights and Measures (BIPM)."

Note 3 to entry: The kilogram is one of the seven SI base units: second (s), metre (m), kilogram (kg), ampere (A), kelvin (K), mole (mol) and candela (cd).


Publication date:2020-12
Source:SI Brochure, 9th edition, 2019, 2.3.1, modified – The definition in the SI Brochure has been revised to comply with the IEV rules. Notes 1 to 3 to entry have been added.
Replaces:112-02-06:2010-01
Internal notes:2020-12-14: Tagging error corrected in Note 1 to entry: c corrected to <i>c</i>. JGO
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