ISO 639-1

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ISO 639-1

Quality:

ISO 639-1 - set of ISO 639 standard. Article “ISO 639-1” in Simple English Wikipedia has 13.1 points for quality (as of July 1, 2025).

This article has the best quality in Polish Wikipedia. However, the most popular language version of this article is English.

Since the creation of article “ISO 639-1”, its content was written by 16 registered users of Simple English Wikipedia and edited by 467 registered Wikipedia users in all languages.

The article is cited 183 times in Simple English Wikipedia and cited 10415 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Simple English): #56 in September 2018
  • Global: #17446 in February 2012

The highest popularity rank from 2008:

  • Local (Simple English): #5054 in July 2014
  • Global: #45250 in April 2015

There are 30 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
1Polish (pl)
ISO 639-1
25.8617
2Spanish (es)
ISO 639-1
20.1553
3English (en)
ISO 639-1
17.3599
4Czech (cs)
ISO 639-1
17.2231
5Hungarian (hu)
ISO 639-1
16.5276
6Simple English (simple)
ISO 639-1
13.0945
7Malay (ms)
ISO 639-1
12.084
8Lithuanian (lt)
ISO 639-1
10.6535
9Russian (ru)
ISO 639-1
9.3734
10Indonesian (id)
ISO 639-1
7.9449
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 "ISO 639-1" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
ISO 639-1
2 954 339
2Spanish (es)
ISO 639-1
576 673
3Chinese (zh)
ISO 639-1
248 891
4Russian (ru)
ISO 639-1
139 855
5Japanese (ja)
ISO 639-1
114 754
6Arabic (ar)
أيزو 1-639
70 550
7Czech (cs)
ISO 639-1
59 126
8Persian (fa)
ایزو ۱–۶۳۹
53 227
9Indonesian (id)
ISO 639-1
48 247
10Korean (ko)
ISO 639-1
43 107
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 "ISO 639-1" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
ISO 639-1
9 142
2Spanish (es)
ISO 639-1
2 458
3Chinese (zh)
ISO 639-1
2 184
4Russian (ru)
ISO 639-1
653
5Japanese (ja)
ISO 639-1
409
6Simple English (simple)
ISO 639-1
295
7Italian (it)
ISO 639-1
241
8Persian (fa)
ایزو ۱–۶۳۹
195
9Arabic (ar)
أيزو 1-639
190
10Czech (cs)
ISO 639-1
190
More...

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

The highest AI

Language versions of the article "ISO 639-1" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
ISO 639-1
143
2Spanish (es)
ISO 639-1
59
3Chinese (zh)
ISO 639-1
28
4Tamil (ta)
ஐ.எசு.ஓ 639-1
25
5Danish (da)
ISO 639-1
18
6Russian (ru)
ISO 639-1
17
7Simple English (simple)
ISO 639-1
16
8Arabic (ar)
أيزو 1-639
15
9Czech (cs)
ISO 639-1
15
10Japanese (ja)
ISO 639-1
14
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 "ISO 639-1" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
ISO 639-1
6
2Arabic (ar)
أيزو 1-639
1
3Vietnamese (vi)
ISO 639-1
1
4Catalan (ca)
ISO 639-1
0
5Czech (cs)
ISO 639-1
0
6Danish (da)
ISO 639-1
0
7Greek (el)
ISO 639-1
0
8Spanish (es)
ISO 639-1
0
9Estonian (et)
ISO 639-1
0
10Basque (eu)
ISO 639-1
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 "ISO 639-1" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
ISO 639-1
1 238
2Czech (cs)
ISO 639-1
716
3Chinese (zh)
ISO 639-1
665
4Indonesian (id)
ISO 639-1
654
5Spanish (es)
ISO 639-1
591
6Arabic (ar)
أيزو 1-639
575
7Persian (fa)
ایزو ۱–۶۳۹
558
8Ukrainian (uk)
ISO 639-1
509
9Greek (el)
ISO 639-1
504
10Japanese (ja)
ISO 639-1
438
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
arArabic
أيزو 1-639
caCatalan
ISO 639-1
csCzech
ISO 639-1
daDanish
ISO 639-1
elGreek
ISO 639-1
enEnglish
ISO 639-1
esSpanish
ISO 639-1
etEstonian
ISO 639-1
euBasque
ISO 639-1
faPersian
ایزو ۱–۶۳۹
huHungarian
ISO 639-1
idIndonesian
ISO 639-1
itItalian
ISO 639-1
jaJapanese
ISO 639-1
kkKazakh
ISO 639-1
koKorean
ISO 639-1
ltLithuanian
ISO 639-1
msMalay
ISO 639-1
plPolish
ISO 639-1
ruRussian
ISO 639-1
simpleSimple English
ISO 639-1
srSerbian
ISO 639-1
taTamil
ஐ.எசு.ஓ 639-1
thThai
ISO 639-1
trTurkish
ISO 639-1
ukUkrainian
ISO 639-1
urUrdu
آیزو 639-1
uzUzbek
ISO 639-1
viVietnamese
ISO 639-1
zhChinese
ISO 639-1

Popularity rank trends

Best Rank Simple English:
#5054
07.2014
Global:
#45250
04.2015

AI rank trends

Best Rank Simple English:
#56
09.2018
Global:
#17446
02.2012

Local popularity rank history

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on ISO 639-1 from Wikipedia articles about List of ISO 639-1 codes, ISO 639, English, Language identifier and List of ISO 639-2 codes. Whereas reading the article about ISO 639-1 people most often go to Wikipedia articles on Lists of ISO 639 codes, ISO 639, List of ISO 639-1 codes, Language identifier and ISO 3166-1 alpha-2 code.

Cumulative results of quality and popularity of the Wikipedia article

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

simple: ISO 639-1

News from 21 December 2025

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In Simple English Wikipedia the most popular articles on that day were: List of European countries, XXXTentacion, President of the Government of Morocco, Michigan Auto Law, New York, I Love You, Andrew Tate, Manon Bannerman, The Dark Knight Trilogy, Black, List of sex positions.

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