Learning & Education
Best Online Encyclopedias in 2026
Online encyclopedias can help you look up a fact, explore a subject, or support learning with reference material. Compared on content formats and update frequency, the entries offer useful points of contrast in how information is presented and maintained.
- 01
Encyclopaedia Universalis It suits individual reference readers as well as schools, libraries, local authorities and companies seeking encyclopedia and education resources.
From €1/mo Free trial Web · iOS · Android8.9 Visit Specs - 02 Encyclopaedia Britannica
It suits readers seeking reference articles and multimedia, as well as educators and institutions needing citation tools or educator resources.
Free plan Web · iOS · Android · Browser extension8.8 Visit Specs - 03
Enciclopèdia.cat Enciclopèdia.cat suits readers looking for Catalan-language reference material across a broad range of subjects.
Free plan Web8.5 Visit Specs - 04 Encyclopedia.com
Encyclopedia.com suits readers looking for reference entries and topic summaries from published sources.
Free plan Web8.4 Visit Specs - 05
Baidu Baike It suits Chinese-language readers looking up information and users who want to contribute or correct entries.
Free plan Web8.3 Visit Specs - 06
Wikipedia Wikipedia suits readers looking for an encyclopedia with multilingual editions and free access without advertising or paywalls.
Free plan Open source Web · iOS · Android · API8.3 Visit Specs - 07
Brockhaus Brockhaus suits private customers, students, educators, and libraries seeking digital reference or learning materials.
From €5.83/mo Free trial Web8.1 Visit Specs - 08 Encyclopedia of Arkansas
It suits readers exploring Arkansas history and culture, including students, educators, and historians.
Free plan Web8.1 Visit Specs - 09
Encyclopedia Virginia It suits students, teachers, communities, and general readers researching Virginia history and culture.
Free plan Web8.1 Visit Specs - 10
Lex – Danmarks Nationalleksikon Lex suits Danish-language readers seeking reference material and institutions supporting public education.
Free plan Web8.1 Visit Specs - 11 Britannica Kids Free trial Web7.8 Visit Specs
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Encyclopedia of Alabama It suits readers seeking an online reference on Alabama and educators looking for citation and educational resources.
Free plan Web7.7 Visit Specs - 13
Encyclopedia of Korean Culture It suits readers researching Korean culture and developers or institutions seeking structured encyclopedia content through an API.
Free plan Web · API7.7 Visit Specs - 14
Nationalencyklopedin From 49.17 SEK/mo Free trial Web7.7 Visit Specs - 15 Klexikon
Klexikon suits German-speaking children and young learners, including beginning readers and German learners who may benefit from MiniKlexikon.
Free plan Web7.6 Visit Specs - 16
Store norske leksikon SNL suits pupils, students, teachers and other readers looking for a free reference work in Bokmål or Nynorsk.
Free plan Web · iOS · API7.6 Visit Specs - 17
Encyclopédie Larousse This encyclopedia suits web visitors seeking free definitions, articles, synonyms, and illustrated reference entries.
Free plan Web7.5 Visit Specs - 18 Britannica Library Web7.4 Visit Specs
- 19 Credo Reference Web7.3 Visit Specs
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New World Encyclopedia It suits readers wanting broad reference material online, especially teachers, students, and general readers.
Free plan Web7.3 Visit Specs - 21 World Book Online From $20.83/mo Web · iOS · Android7.3 Visit Specs
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Infoplease Infoplease suits students, teachers, and parents looking for reference material or homework resources.
Web7.2 Visit Specs - 23 The Canadian Encyclopedia Free plan Web7.2 Visit Specs
- 24 Wikiquote Free plan Web7.2 Visit Specs
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Oxford Reference Free trial Web7.1 Visit Specs
Citation tools can help you follow sources; educator resources and institutional access may matter for study or teaching. You can also weigh mobile apps, free-plan availability, and paid-from pricing when considering access. Treccani, Wikipedia, and Store norske leksikon are among the named options, alongside Encyclopedia.com and Britannica Library. Compare the details that fit your research habits and the learning setting where you expect to use a reference source.
Compare Encyclopaedia Universalis and Encyclopaedia Britannica Get a place on this list