Unit Ei 1644

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Unit Ei 1644

Quality:

Unit Ei 1644 - Japanese biological warfare facility (1939–1945). Article “Unit Ei 1644” in English Wikipedia has 39.8 points for quality (as of July 1, 2025). The article contains 26 references and 6 sections.

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

In June 2025 the article “Unit Ei 1644” was edited by 2 authors in English Wikipedia and written by 3 authors in all languages.

Since the creation of article “Unit Ei 1644”, its content was written by 42 registered users of English Wikipedia and edited by 89 registered Wikipedia users in all languages.

The article is cited 24 times in English Wikipedia and cited 125 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #95796 in October 2005
  • Global: #69140 in February 2024

The highest popularity rank from 2008:

  • Local (English): #321992 in May 2008
  • Global: #480209 in February 2024

There are 9 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
1Chinese (zh)
荣字1644部队
50.0487
2English (en)
Unit Ei 1644
39.808
3Spanish (es)
Escuadrón 1644
27.8977
4Arabic (ar)
الوحدة 1644
27.4459
5Swedish (sv)
Enhet Ei 1644
23.9241
6Persian (fa)
واحد ائی ۱۶۴۴
22.6625
7Russian (ru)
Отряд 1644
10.5491
8Hebrew (he)
יחידה 1644
2.9645
9Korean (ko)
1644부대
1.4095
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 "Unit Ei 1644" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Unit Ei 1644
318 730
2Korean (ko)
1644부대
37 327
3Chinese (zh)
荣字1644部队
8 347
4Russian (ru)
Отряд 1644
7 170
5Spanish (es)
Escuadrón 1644
6 093
6Hebrew (he)
יחידה 1644
4 486
7Persian (fa)
واحد ائی ۱۶۴۴
3 025
8Arabic (ar)
الوحدة 1644
2 081
9Swedish (sv)
Enhet Ei 1644
770
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 "Unit Ei 1644" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Unit Ei 1644
2 119
2Chinese (zh)
荣字1644部队
579
3Korean (ko)
1644부대
106
4Spanish (es)
Escuadrón 1644
105
5Russian (ru)
Отряд 1644
87
6Hebrew (he)
יחידה 1644
58
7Arabic (ar)
الوحدة 1644
20
8Swedish (sv)
Enhet Ei 1644
19
9Persian (fa)
واحد ائی ۱۶۴۴
18
More...

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

The highest AI

Language versions of the article "Unit Ei 1644" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Unit Ei 1644
42
2Korean (ko)
1644부대
17
3Chinese (zh)
荣字1644部队
9
4Spanish (es)
Escuadrón 1644
7
5Hebrew (he)
יחידה 1644
7
6Arabic (ar)
الوحدة 1644
2
7Russian (ru)
Отряд 1644
2
8Swedish (sv)
Enhet Ei 1644
2
9Persian (fa)
واحد ائی ۱۶۴۴
1
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 "Unit Ei 1644" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Unit Ei 1644
2
2Korean (ko)
1644부대
1
3Arabic (ar)
الوحدة 1644
0
4Spanish (es)
Escuadrón 1644
0
5Persian (fa)
واحد ائی ۱۶۴۴
0
6Hebrew (he)
יחידה 1644
0
7Russian (ru)
Отряд 1644
0
8Swedish (sv)
Enhet Ei 1644
0
9Chinese (zh)
荣字1644部队
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 "Unit Ei 1644" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Chinese (zh)
荣字1644部队
61
2English (en)
Unit Ei 1644
24
3Korean (ko)
1644부대
10
4Russian (ru)
Отряд 1644
9
5Persian (fa)
واحد ائی ۱۶۴۴
8
6Hebrew (he)
יחידה 1644
5
7Arabic (ar)
الوحدة 1644
4
8Spanish (es)
Escuadrón 1644
2
9Swedish (sv)
Enhet Ei 1644
2
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
الوحدة 1644
enEnglish
Unit Ei 1644
esSpanish
Escuadrón 1644
faPersian
واحد ائی ۱۶۴۴
heHebrew
יחידה 1644
koKorean
1644부대
ruRussian
Отряд 1644
svSwedish
Enhet Ei 1644
zhChinese
荣字1644部队

Popularity rank trends

Best Rank English:
#321992
05.2008
Global:
#480209
02.2024

AI rank trends

Best Rank English:
#95796
10.2005
Global:
#69140
02.2024

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Unit Ei 1644 from Wikipedia articles about Unit 731, Japanese war crimes, Kaimingjie germ weapon attack, Epidemic Prevention and Water Purification Department and Nanjing Massacre. Whereas reading the article about Unit Ei 1644 people most often go to Wikipedia articles on Unit 731, Epidemic Prevention and Water Purification Department, Vivisection, Sato Shunji and Shirō Ishii.

Cumulative results of quality and popularity of the Wikipedia article

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

News from 28 January 2026

On 28 January 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2025–26 UEFA Champions League, Nipah virus, Doomsday Clock, UEFA Champions League, Elena Rybakina, Donald Trump, 2026 European Men's Handball Championship, killing of Alex Pretti, Kristi Noem, deaths in 2026.

In English Wikipedia the most popular articles on that day were: Ajit Pawar, Border 2, Sharad Pawar, Killing of Alex Pretti, Ilhan Omar, Sunetra Pawar, Todd Monken, Kristi Noem, Wonder Man (miniseries), Gregory Bovino.

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