Planck constant

en

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Planck constant

Quality:

Planck constant - physical constant representing the quantum of action ; mathematical italic small h (U+210E), mathematical symbol ‹ℎ›. Article "Planck constant" in English Wikipedia has 74.1 points for quality (as of July 1, 2025). The article contains 75 references and 13 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that language version.

Achievements in all the time:
English Wikipedia:
The 5029th most popular in English Wikipedia.
Global Wikipedia:
The 3634th most popular in all topics.
Achievements in the last month:
Global Wikipedia:
The 9192nd most popular in all topics in the last month.

In June 2025 the article "Planck constant" was edited by 7 authors in English Wikipedia and written by 17 authors in all languages.

Since the creation of article "Planck constant", its content was written by 652 registered users of English Wikipedia and edited by 2504 registered Wikipedia users in all languages.

The article is cited 721 times in English Wikipedia and cited 7311 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #116 in November 2001
  • Global: #132 in November 2001

The highest popularity rank from 2008:

  • Local (English): #673 in July 2019
  • Global: #282 in July 2019

There are 53 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
Planck constant
74.1155
2Simple English (simple)
Planck constant
71.7361
3Spanish (es)
Constante de Planck
70.1832
4Vietnamese (vi)
Hằng số Planck
53.118
5German (de)
Planck-Konstante
51.9361
6Catalan (ca)
Constant de Planck
51.0518
7French (fr)
Constante de Planck
37.4215
8Latin (la)
Constans Planckiana
36.7743
9Ukrainian (uk)
Стала Планка
36.1997
10Czech (cs)
Planckova konstanta
33.3196
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Planck constant" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Planck constant
20 214 194
2German (de)
Planck-Konstante
4 862 616
3Spanish (es)
Constante de Planck
4 000 730
4Russian (ru)
Постоянная Планка
3 177 266
5French (fr)
Constante de Planck
2 310 525
6Japanese (ja)
プランク定数
1 983 504
7Italian (it)
Costante di Planck
1 640 586
8Polish (pl)
Stała Plancka
1 602 308
9Chinese (zh)
普朗克常数
1 164 023
10Portuguese (pt)
Constante de Planck
1 074 395
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Planck constant" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Planck constant
47 126
2German (de)
Planck-Konstante
12 642
3Russian (ru)
Постоянная Планка
7 392
4Spanish (es)
Constante de Planck
7 296
5French (fr)
Constante de Planck
7 009
6Japanese (ja)
プランク定数
6 080
7Italian (it)
Costante di Planck
5 486
8Chinese (zh)
普朗克常数
4 568
9Polish (pl)
Stała Plancka
3 296
10Korean (ko)
플랑크 상수
2 616
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Planck constant" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Planck constant
652
2German (de)
Planck-Konstante
222
3French (fr)
Constante de Planck
175
4Spanish (es)
Constante de Planck
127
5Italian (it)
Costante di Planck
98
6Russian (ru)
Постоянная Планка
97
7Dutch (nl)
Constante van Planck
74
8Japanese (ja)
プランク定数
63
9Polish (pl)
Stała Plancka
57
10Hebrew (he)
קבוע פלאנק
54
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Planck constant" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Planck constant
7
2German (de)
Planck-Konstante
2
3Korean (ko)
플랑크 상수
2
4Catalan (ca)
Constant de Planck
1
5Hebrew (he)
קבוע פלאנק
1
6Armenian (hy)
Պլանկի հաստատուն
1
7Italian (it)
Costante di Planck
1
8Latin (la)
Constans Planckiana
1
9Urdu (ur)
پلانک کا مستقلہ
1
10Arabic (ar)
ثابت بلانك
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Planck constant" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Planck constant
721
2Italian (it)
Costante di Planck
485
3Russian (ru)
Постоянная Планка
381
4French (fr)
Constante de Planck
380
5German (de)
Planck-Konstante
367
6Chinese (zh)
普朗克常数
322
7Spanish (es)
Constante de Planck
282
8Arabic (ar)
ثابت بلانك
256
9Ukrainian (uk)
Стала Планка
239
10Catalan (ca)
Constant de Planck
235
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
ثابت بلانك
azAzerbaijani
Plank sabiti
beBelarusian
Пастаянная Планка
bgBulgarian
Константа на Планк
caCatalan
Constant de Planck
csCzech
Planckova konstanta
daDanish
Plancks konstant
deGerman
Planck-Konstante
elGreek
Σταθερά του Πλανκ
enEnglish
Planck constant
eoEsperanto
Konstanto de Planck
esSpanish
Constante de Planck
etEstonian
Plancki konstant
euBasque
Plancken konstantea
faPersian
ثابت پلانک
fiFinnish
Planckin vakio
frFrench
Constante de Planck
glGalician
Constante de Planck
heHebrew
קבוע פלאנק
hiHindi
प्लैंक स्थिरांक
hrCroatian
Planckova konstanta
huHungarian
Planck-állandó
hyArmenian
Պլանկի հաստատուն
idIndonesian
Konstanta Planck
itItalian
Costante di Planck
jaJapanese
プランク定数
kaGeorgian
პლანკის მუდმივა
kkKazakh
Планк тұрақтысы
koKorean
플랑크 상수
laLatin
Constans Planckiana
ltLithuanian
Planko konstanta
msMalay
Pemalar Planck
nlDutch
Constante van Planck
nnNorwegian (Nynorsk)
Planckkonstanten
noNorwegian
Plancks konstant
plPolish
Stała Plancka
ptPortuguese
Constante de Planck
roRomanian
Constanta Planck
ruRussian
Постоянная Планка
shSerbo-Croatian
Planckova konstanta
simpleSimple English
Planck constant
skSlovak
Planckova konštanta
slSlovenian
Planckova konstanta
srSerbian
Планкова константа
svSwedish
Plancks konstant
thThai
ค่าคงตัวของพลังค์
trTurkish
Planck sabiti
ukUkrainian
Стала Планка
urUrdu
پلانک کا مستقلہ
uzUzbek
Plank doimiysi
viVietnamese
Hằng số Planck
zhChinese
普朗克常数
zhminnanMin Nan
Planck siông-sò͘

Popularity rank trends

Best Rank English:
#673
07.2019
Global:
#282
07.2019

AI rank trends

Best Rank English:
#116
11.2001
Global:
#132
11.2001

Local popularity rank history

Global popularity rank history

Local AI rank history

Global AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Planck constant from Wikipedia articles about Max Planck, Uncertainty principle, Planck units, Kilogram and Planck length. Whereas reading the article about Planck constant people most often go to Wikipedia articles on Max Planck, Black body, Planck units, Action and Plancks law.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

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About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information