The International Committee for Weights and Measures (CIPM) approved a revision in November 2018 that defines the kilogram by defining the Planck constant to be exactly 6.626 070 15 × 10−34 …

The meaning of KILOGRAM is the base unit of mass in the International System of Units that is defined by setting the fixed numerical value of Planck's constant to 6.62607015 x 10—34 joule seconds.

May 14, 2018 · For more than a century, the kilogram (kg) — the fundamental unit of mass in the International System of Units (SI) — was defined as exactly equal to the mass of a small polished …

Dec 24, 2025 · kilogram (kg), basic unit of mass in the metric system. A kilogram is very nearly equal (it was originally intended to be exactly equal) to the mass of 1,000 cubic cm of water.

A unit of mass in the metric system, equal to one thousand grams. The weight of a one-kilogram mass is slightly over two pounds.

(abbreviation kg); (short form kilo, us / ˈki·loʊ /) Add to word list a unit of measurement of weight equal to 1000 grams or 2.2 pounds (Definition of kilogram from the Cambridge Academic Content Dictionary …

The kilogram, symbol kg, is the SI base unit of mass. The kilogram is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10 −34 when expressed in the unit J …

Illustrated definition of Kilogram: A Metric measure of mass (which we feel as weight). The abbreviation is kg. 1 kg = 1000 grams. 1 kg =...

A kilogram is the base unit of mass in the International System of Units (SI), defined as the mass of a specific physical prototype kept at the International Bureau of Weights and Measures.

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 6.626 070 15 x 10 –34 when expressed in the unit J s, which is equal to kg …