0.999...

Quality:

0.999... - alternative decimal expansion of 1. Article “0.999...” in Japanese Wikipedia has 46.8 points for quality (as of July 1, 2025). The article contains 69 references and 26 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 2.46 points.

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

Achievements in all the time:

Japanese Wikipedia:

ja

The 9744^th most editable in Japanese Wikipedia.

Global Wikipedia:

The 5946^th most popular in AI.

Achievements in the last month:

Global Wikipedia:

The 9220^th most popular in AI in the last month.

Since the creation of article “0.999...”, its content was written by 158 registered users of Japanese Wikipedia (9744^th place) and edited by 3265 registered Wikipedia users in all languages (5946^th place).

The article is cited 25 times in Japanese Wikipedia and cited 753 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Japanese): #618 in April 2015
• Global: #7 in October 2006

The highest popularity rank from 2008:

• Local (Japanese): #299 in August 2010
• Global: #6997 in August 2010

There are 44 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.

#	Language	Quality grade	Quality score
1	Catalan (ca) 0,999...		86.159
2	English (en) 0.999...		81.2529
3	Malay (ms) 0.999...		78.5186
4	Chinese (zh) 0.999…		77.3155
5	Indonesian (id) 0,999...		70.8581
6	Greek (el) 0,999...		70.7539
7	Portuguese (pt) 0,999...		67.6229
8	Hungarian (hu) 0,999…		64.7777
9	Korean (ko) 0.999…		64.0449
10	Spanish (es) 0,999…		62.3671

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

#	Language	Popularity award	Relative popularity
1	English (en) 0.999...		4 552 403
2	Japanese (ja) 0.999...		1 501 115
3	Spanish (es) 0,999…		640 383
4	Russian (ru) 0,(9)		410 794
5	Chinese (zh) 0.999…		328 973
6	Italian (it) 0,999...		248 493
7	Polish (pl) 0,(9)		237 518
8	Persian (fa) ۰٫۹۹۹…		228 632
9	German (de) 0,999…		215 946
10	Indonesian (id) 0,999...		184 015

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

#	Language	Popularity award	Relative popularity
1	English (en) 0.999...		22 191
2	Japanese (ja) 0.999...		8 106
3	Chinese (zh) 0.999…		1 256
4	German (de) 0,999…		1 073
5	Russian (ru) 0,(9)		1 040
6	French (fr) 0,999…		767
7	Spanish (es) 0,999…		593
8	Korean (ko) 0.999…		425
9	Portuguese (pt) 0,999...		422
10	Polish (pl) 0,(9)		353

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

#	Language	AI award	Relative AI
1	English (en) 0.999...		1 033
2	German (de) 0,999…		586
3	Chinese (zh) 0.999…		174
4	Japanese (ja) 0.999...		158
5	French (fr) 0,999…		137
6	Italian (it) 0,999...		97
7	Hebrew (he) 0.999...		91
8	Spanish (es) 0,999…		89
9	Hungarian (hu) 0,999…		79
10	Russian (ru) 0,(9)		78

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

#	Language	AI award	Relative AI
1	English (en) 0.999...		14
2	Korean (ko) 0.999…		3
3	German (de) 0,999…		2
4	Simple English (simple) 0.999...		2
5	Hebrew (he) 0.999...		1
6	Arabic (ar) 0.999...		0
7	Azerbaijani (az) 0,(9)		0
8	Belarusian (be) 0,(9)		0
9	Bulgarian (bg) 0,(9)		0
10	Catalan (ca) 0,999...		0

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

On 12 August 2025 in multilingual Wikipedia, Internet users most often read articles on the following topics: Cristiano Ronaldo, Wednesday, Georgina Rodríguez, ChatGPT, Weapons, Jenna Ortega, deaths in 2025, Taylor Swift, Miguel Uribe Turbay, 2025–26 UEFA Champions League.

In Japanese Wikipedia the most popular articles on that day were: 日本航空123便墜落事故, 坂本九, 二階堂ふみ, カズレーザー, 北原遥子, やなせたかし, 柏木由紀子, 大竹七未, 大島花子, 舞坂ゆき子.

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