Japanese Wikipedia

General Overview:
The Japanese Wikipedia was launched on 20 May 2001. As of the latest data, it features 1.5 million articles, supported by a community of 25.5 thousand active users.

Size & Content:
The encyclopedia has accumulated over 108.4 million edits across all pages, spanning 4.4 million pages in total. Its content is backed by 20.8 million references, averaging approximately 13.9 references per article. The total size of all articles amounts to approximately 13.69 gigabytes, with an average of about 9.62 kilobytes per article. The most prolific month for new article creation was March 2007, with 14 thousand new articles added. Following closely were September 2006 (13.9 thousand articles) and February 2007 (13.6 thousand articles), marking periods of significant expansion. The largest content growth in articles occurred in February 2020, when 90.95 megabytes were added. Other notable spikes in data volume took place during May 2020 (83.63 megabytes) and March 2026 (82.64 megabytes).

Readership & Usage:
On average, the Japanese Wikipedia attracts approximately 117.9 million unique devices per month. The three countries with the highest share of readership are Japan (96.17%), United States (1.36%), and Taiwan (0.34%). The month with the highest readership was January 2025, recording 137.7 million unique device visits. The second and third highest peaks in audience reach were observed in August 2025 (with 133.7 million unique devices) and May 2025 (with 133 million unique devices), respectively.

Website address: https://ja.wikipedia.org