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Using, editing, and learning more about Wikipedia
Last Updated: May 3, 2016 URL: Print Guide RSS UpdatesEmail Alerts

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Wikipedia by the numbers

Wikipedia is the largest reference work in the world. What does that mean?

  • Editions in 250+ languages
  • 3.9 million articles in English
  • 21 million articles in all languages
  • 30,000 active editors every month
  • 9 million page views per hour


This guide covers an introduction to using and editing Wikipedia, the world's largest free online encyclopedia.

Wikipedia is a non-profit encyclopedia project, produced by volunteer editors. Anyone can join and contribute. It was started in 2001 in English, and also exists in over 200 other languages. 

New articles and article edits are not reviewed by an editorial body. Instead, they are peer-reviewed by other editors in accordance to whether they meet certain editorial standards that the Wikipedia community has developed over the years, including whether they are neutral, factual and verifiable. 

You've probably used Wikipedia: millions of people do every day, from around the world. But are Wikipedia articles suitable for using in academic work? How do you cite them? And how can you make corrections? This guide covers these issues and more.

Wikipedia editors in Taiwan at the annual Wikimedia conference, 2007

Wikipedia editors in Taiwan in 2007, holding a 3D model of the Wikipedia globe logo. CC-BY-SA, by Everlong.


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