wiqqi

Khan Academy

American nonprofit founded by Sal Khan that offers free online lessons and practice to anyone.

At a glance

Also on this page: Key facts · Links · Sources · Related pages

Why it matters

Key facts

Founded
2008, by Sal Khan1
Origins
Sal Khan created the YouTube account on 16 November 20062
Type
501(c)(3) nonprofit1
Offers
Instructional videos, practice exercises, teaching tools, test preparation and assessments1
Funding
Mainly philanthropic donations, so the material stays free1
YouTube
9.49 million subscribers, 2.25 billion views (October 2026)1

People

Founded by

Before

People until 2016

Grant Sanderson (made multivariable calculus videos, articles and exercises)

Sources

  1. Wikipedia: Khan Academy (opens en.wikipedia.org)
  2. Wikipedia: Sal Khan (opens en.wikipedia.org)

Last checked against its sources today

Is something on this page wrong or out of date? Tell us

How recent

The line under a date fills as time passes: empty when new, then one equal share each for a day, a week, a month and a year. For episodes and other items it is full at 2 years; for "last checked", at a year. A striped line means the date is known only to the month or year.