The kilogram is the only standard unit to include an SI prefix (kilo-) as part of its name. The gram (10 −3 kg) is an SI derived unit of mass. However, the names of all SI mass units are based on gram, rather than on kilogram; thus 10 3 kg is a megagram (10 6 g), not a *kilokilogram.

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 × 10 −34 when expressed in the unit J⋅s, which is equal to kg⋅m 2 ⋅s −1 , where the metre and the second are defined in terms of c and Δ ν Cs .

The kilogram [b] is the base unit of mass in the International System of Units (SI). It is widely used in science, engineering, and commerce worldwide. The kilogram is exactly the mass of one litre of water.

Kilograms conversion calculators, tables and formulas to automatically convert from other weight units.

日常说的重量在物理学中称为质量，质量是量度物体惯性大小的物理量。在国际单位制中，质量的基本单位是千克，符号Kg。

2018年7月22日 · The kg is defined as being equal to the mass of the International Prototype of the Kilogram (IPK), a block of platinum-iridium alloy manufactured in 1889 and stored at the International Bureau of Weights and Measures in Sèvres, France.

A kilogram (kg) is the base unit of mass in the International System of Units (SI). For everyday purposes, the kilogram is also used as a unit of weight , even though it is actually a measurement of mass; for the purposes of this site, we will use "weight" as its common definition meaning mass .

2024年4月13日 · 千克(符号kg)为国际单位制中度量质量的基本单位，千克也是日常生活中最常使用的基本单位之一。 一千克的定义就是国际千克原器的质量，几乎与一升的水等重。

The kilogram, symbol kg, is the SI unit of mass, one of SI's 7 base units. It is defined by taking the fixed numerical value of the Planck constant to be 6.626 070 15 × 10⁻³⁴ when expressed in the unit J s, which is equal to kg m²s⁻¹, where the metre and the second are defined in …

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 s, which is equal to kg m 2 s −1, where the metre and second are defined in …