Catalytic converter

Quality:

Catalytic converter - emission control device that treats engine exhaust gas by catalyzing pollutant-destroying redox reactions. Article “Catalytic converter” in Simple English Wikipedia has 0.9 points for quality (as of July 1, 2025). The article also contains templates indicating quality issues, therefore its score was reduced by 0.05 points.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Simple English) language version.

Since the creation of article “Catalytic converter”, its content was written by 16 registered users of Simple English Wikipedia and edited by 1592 registered Wikipedia users in all languages.

The article is cited 12 times in Simple English Wikipedia and cited 3850 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Simple English): #1231 in November 2015
• Global: #8183 in January 2008

The highest popularity rank from 2008:

• Local (Simple English): #1792 in July 2008
• Global: #924 in January 2014

There are 32 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	English (en) Catalytic converter		69.7567
2	Greek (el) Καταλυτικός μετατροπέας		63.4871
3	German (de) Fahrzeugkatalysator		42.8235
4	Bulgarian (bg) Каталитичен преобразувател		35.1359
5	French (fr) Pot catalytique		33.3244
6	Persian (fa) مبدل کاتالیست		24.4451
7	Korean (ko) 디젤 산화 촉매장치		23.6082
8	Indonesian (id) Konverter katalitik		22.3005
9	Czech (cs) Katalyzátor výfukových plynů		21.4342
10	Portuguese (pt) Conversor catalítico		21.4087

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

#	Language	Popularity award	Relative popularity
1	English (en) Catalytic converter		14 948 347
2	German (de) Fahrzeugkatalysator		2 010 855
3	Spanish (es) Convertidor catalítico		1 385 756
4	French (fr) Pot catalytique		926 721
5	Japanese (ja) 三元触媒		725 189
6	Italian (it) Convertitore catalitico		456 019
7	Russian (ru) Каталитический конвертер		399 799
8	Polish (pl) Reaktor katalityczny		399 019
9	Chinese (zh) 催化转换器		379 355
10	Persian (fa) مبدل کاتالیست		237 775

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) Catalytic converter		24 570
2	German (de) Fahrzeugkatalysator		2 510
3	Spanish (es) Convertidor catalítico		1 810
4	Chinese (zh) 催化转换器		1 483
5	Japanese (ja) 三元触媒		1 247
6	French (fr) Pot catalytique		1 184
7	Russian (ru) Каталитический конвертер		1 062
8	Hebrew (he) ממיר קטליטי		666
9	Italian (it) Convertitore catalitico		617
10	Polish (pl) Reaktor katalityczny		490

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

#	Language	AI award	Relative AI
1	English (en) Catalytic converter		623
2	German (de) Fahrzeugkatalysator		242
3	French (fr) Pot catalytique		118
4	Italian (it) Convertitore catalitico		80
5	Spanish (es) Convertidor catalítico		60
6	Russian (ru) Каталитический конвертер		52
7	Portuguese (pt) Conversor catalítico		39
8	Hebrew (he) ממיר קטליטי		34
9	Persian (fa) مبدل کاتالیست		33
10	Japanese (ja) 三元触媒		31

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) Catalytic converter		3
2	Swedish (sv) Katalytisk avgasrening		1
3	Arabic (ar) محول حفزي		0
4	Bulgarian (bg) Каталитичен преобразувател		0
5	Catalan (ca) Convertidor catalític		0
6	Czech (cs) Katalyzátor výfukových plynů		0
7	Danish (da) Katalysator (udstødningssystem)		0
8	German (de) Fahrzeugkatalysator		0
9	Greek (el) Καταλυτικός μετατροπέας		0
10	Spanish (es) Convertidor catalítico		0

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

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In Simple English Wikipedia the most popular articles on that day were: XXXTentacion, Black, List of European countries, Jeffrey Epstein, Vitruvian Man, Golden Edge, Jacqueline Kennedy Onassis, List of countries, Manon Bannerman, Megan Skiendiel.

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