## Kilogram |

Kilogram | |
---|---|

General information | |

Unit of | |

Symbol | kg |

Conversions | |

1 kg in ... | ... is equal to ... |

| ≈ 2.205 ^{[Note 1]} |

British Gravitational | ≈ 0.0685 |

The **kilogram** (also **kilogramme**) is the **kg**. It is a widely used measure in science, engineering, and commerce worldwide, and is often called a **kilo**. The kilogram is almost exactly the mass of one

The kilogram was originally defined in 1795 as the mass of a * Kilogramme des Archives*, a platinum artefact, replaced it as the standard of mass. In 1879 a cylinder of platinum-iridium, the

Despite best efforts to maintain it, evidence accumulated that the mass of the International Prototype Kilogram had been changing; the IPK had diverged from its replicas by approximately 50 micrograms since their manufacture late in the 19th century. This led to ^{[1]} This culminated in 2018 with a definition in terms of the ^{[1]} Thus, the kilogram is now defined in terms of the second and the metre, replacing the IPK as primary standard.^{[2]} The new definition was approved by the ^{[3]} Physical standard masses such as the IPK and its replicas still serve as secondary standards.

- definition
- name and terminology
- mass and weight
- 2019 redefinition based on fundamental constants
- si multiples
- see also
- notes
- references
- external links

The kilogram is defined in terms of three fundamental physical constants: The *ν*_{Cs}, and the

- 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 6.62607015×10
^{−34}when expressed in the unit J⋅s, which is equal to kg⋅m^{2}⋅s^{−1}, where themetre and thesecond are defined in terms of c and Δ*ν*_{Cs}.^{[2]}^{[4]}

This definition makes the kilogram consistent with the older definition: the mass remains almost exactly the same as the mass of a litre of water.

The development of the first ^{[5]} Within three years it was replaced by the kilogram.
The gram, 1/1000 of a kilogram, was provisionally defined in 1795 as the mass of one cubic ^{[6]} The ^{3} of water under atmospheric pressure and at the temperature of its maximum density, which is approximately 4

The

The kilogram was the last SI unit that was directly defined by an artefact rather than fundamental physical properties that could be independently reproduced in different laboratories.^{[1]} Three other base units (^{[7]}

After the International Prototype Kilogram had been found to vary in mass over time relative to its reproductions,^{[8]} the *h*. The decision was originally deferred until 2014; in 2014 it was deferred again until the next meeting.^{[9]} CIPM proposed revised definitions of the ^{[10]} The formal vote on 16 November 2018 approved the change.^{[11]}^{[12]}

Other Languages

Afrikaans: Kilogram

Alemannisch: Kilogramm

Аҧсшәа: Акилограмм

العربية: كيلوغرام

aragonés: Kilogramo

অসমীয়া: কিলোগ্ৰাম

asturianu: Quilogramu

Avañe'ẽ: Kilogarámo

Aymar aru: Kilu

azərbaycanca: Kiloqram

تۆرکجه: کیلوگیرم

বাংলা: কিলোগ্রাম

Bân-lâm-gú: Kong-kin

башҡортса: Килограмм

беларуская: Кілаграм

беларуская (тарашкевіца): Кіляграм

भोजपुरी: किलोग्राम

български: Килограм

བོད་ཡིག: སྟོང་ཁེའུ།

bosanski: Kilogram

brezhoneg: Kilogramm

català: Quilogram

Чӑвашла: Килограмм

čeština: Kilogram

Cymraeg: Cilogram

dansk: Kilogram

Deutsch: Kilogramm

eesti: Kilogramm

Ελληνικά: Χιλιόγραμμο

español: Kilogramo

Esperanto: Kilogramo

euskara: Kilogramo

فارسی: کیلوگرم

français: Kilogramme

Frysk: Kilogram

furlan: Chilogram

Gaeilge: Cileagram

galego: Quilogramo

贛語: 公斤

客家語/Hak-kâ-ngî: Kûng-kîn

한국어: 킬로그램

հայերեն: Կիլոգրամ

हिन्दी: किलोग्राम

hrvatski: Kilogram

Bahasa Indonesia: Kilogram

interlingua: Kilogramma

íslenska: Kílógramm

italiano: Chilogrammo

עברית: קילוגרם

Jawa: Kilogram

къарачай-малкъар: Килограмм

ქართული: კილოგრამი

қазақша: Килограмм

Kiswahili: Kilogramu

Kreyòl ayisyen: Kilogram

kurdî: Kîlogram

Кыргызча: Килограмм

Latina: Chiliogramma

latviešu: Kilograms

Lëtzebuergesch: Kilogramm

lietuvių: Kilogramas

Limburgs: Kilogram

lingála: Kilogálame

lumbaart: Chilogram

magyar: Kilogramm

македонски: Килограм

മലയാളം: കിലോഗ്രാം

Malti: Kilogramm

मराठी: किलोग्रॅम

მარგალური: კილოგრამი

مصرى: كيلوجرام

Bahasa Melayu: Kilogram

Mìng-dĕ̤ng-ngṳ̄: Gŭng-gṳ̆ng

монгол: Килограмм

မြန်မာဘာသာ: ကီလိုဂရမ်

Nederlands: Kilogram

नेपाली: किलोग्राम

नेपाल भाषा: किलोग्राम

日本語: キログラム

Nordfriisk: Kilogram

norsk: Kilogram

norsk nynorsk: Kilogram

occitan: Quilograma

oʻzbekcha/ўзбекча: Kilogramm

ਪੰਜਾਬੀ: ਕਿਲੋਗ੍ਰਾਮ

پنجابی: کلوگرام

Patois: Kilogram

Plattdüütsch: Kilogramm

polski: Kilogram

português: Quilograma

română: Kilogram

Runa Simi: Kilugramu

русиньскый: Килограм

русский: Килограмм

Gagana Samoa: Kilokalama

संस्कृतम्: किलोग्राम्

Scots: Kilogramme

shqip: Kilogrami

sicilianu: Chilugrammu

සිංහල: කිලෝග්රෑමය

Simple English: Kilogram

slovenčina: Kilogram

slovenščina: Kilogram

ślůnski: Kilogram

Soomaaliga: Kiilogaraam

کوردی: کیلۆگرام

српски / srpski: Килограм

srpskohrvatski / српскохрватски: Kilogram

Basa Sunda: Kilogram

suomi: Kilogramma

svenska: Kilogram

Tagalog: Kilogramo

தமிழ்: கிலோகிராம்

తెలుగు: కిలోగ్రాము

ไทย: กิโลกรัม

Türkçe: Kilogram

українська: Кілограм

اردو: کلوگرام

vèneto: Chiłogramo

Tiếng Việt: Kilôgam

walon: Kilo

文言: 公斤

Winaray: Kilogramo

吴语: 公斤

ייִדיש: קילאגראם

粵語: 千克

žemaitėška: Kėluograms

中文: 千克