千克

Also known as kg, kilogramme, kilo, kilograms

國際單位制中質量的基本單位

AI overview

The kilogram is the standard unit of mass used worldwide, equal to one thousand grams and symbolized as "kg." It matters because it's the fundamental measurement that scientists, engineers, and everyday people rely on to weigh and compare the mass of objects accurately across different countries and contexts.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Unit.name: kilogram
Unit.image: Poids fonte 5 kg à 2 hg 02.jpg
Unit.caption: A series of 5, 2, 1, 0.5 and 0.2 kilogram weights, made of cast iron
Unit.standard: SI
Unit.quantity: mass
Unit.symbol: kg
Unit.units1: Avoirdupois
Unit.units2: British Gravitational
Unit.inunits2: ≈ slugs
Unit.units3: Unified atomic mass units

via Wikipedia infobox

Wikidata facts

Part of: International System of Units
Named after: gram
Image: CGKilogram.jpg

Show 12 more facts

unit symbol: kg
short name: kg
conversion to SI unit: 1
Commons category: Kilogram
Unicode character: ㎏
on focus list of Wikimedia project: Wikipedia:Vital articles/Level/4
determination method or standard: formula
Wikidata SPARQL query equivalent: wd:Q11570 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
conversion to standard unit: 1000
different from: kilogram-force
replaces: grave
P8168: Žabovřesky

Sources (4)

via Wikidata · CC0

Article · 中文

公斤（英語：kilogram，單位符号kg），又称公斤，国际单位制中質量的基本單位。在国际单位制的七个基本单位中，千克是唯一一個带有词头的基本單位。千克定義爲：能使普朗克常數以kg⋅m2⋅s−1爲單位時，其數值精確等於6.62607015×10−34之單位在2019年5月20日之前，千克仍是国际单位制基本单位中唯一仍使用实物进行定义的单位，即被定义为国际千克原器的质量。現行公斤的定義則是在2018年11月16日的第26屆國際度量衡大會通過。現行定義將以往透過測量得知的普朗克常量定為一標準值，使質量單位（公斤）和長度單位（公尺）、時間單位（秒）關聯，即透过普朗克-爱因斯坦关系式将光子的能量与它的频率联系起来。

Abstract from DBpedia / Wikipedia · CC BY-SA