Volume I October 2026 · World Knowledge

The Encyclopedia, in full.

A comprehensive reference covering every country, flag, currency, landmark and culture on Earth — factual, in-depth and continually updated.

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Total entries
2,502+
Continents
7
Languages
7,000+
Last updated
May 2026
Today's spotlight SAT · 24 OCT 2026
Flag of Lithuania

Lithuania

Lithuania is the southernmost Baltic state, with a baroque Vilnius old town, an amber-rich Curonian Spit on the Baltic, and a language regarded as one of the most archaic Indo-European…

Capital
Vilnius
Population
2.8M
Currency
Euro (EUR)
Continent
Europe
Read the full profile
Index

A–Z of every nation

Filter, jump or scroll. The whole index fits in one panel — no page-scroll required.

198 showing

Curiosities

Rabbit holes, six of them.

Cross-sections of the encyclopedia by theme. Pick a thread and follow it.

Microstates

Population under one million

39 nations

The vastest

Largest countries by land area

Tongues plural

Four or more official languages

5 nations

Landlocked

Not a metre of coastline

44 nations

Archipelagos

Nations made of many islands

Newer arrivals

Independence after 1990

Quick reference

The world, ranked

Four datasets at a glance — the largest currencies, languages, populations and faiths, charted to scale. Open the full reference for 43 more rankings.

01

Most-traded currencies

% of daily forex turnover

  1. 1 US Dollar 88%
  2. 2 Euro 31%
  3. 3 Japanese Yen 17%
  4. 4 Pound Sterling 13%
  5. 5 Chinese Yuan 7%
  6. 6 Australian Dollar 7%
Source BIS Triennial Survey 2022
02

Most-spoken languages

Total speakers (billions)

  1. 1 English 1.5B
  2. 2 Mandarin 1.1B
  3. 3 Hindi 602M
  4. 4 Spanish 548M
  5. 5 French 274M
  6. 6 Arabic 274M
Source Ethnologue 2024
03

Most-populous countries

Population (billions)

  1. 1 India 1.43B
  2. 2 China 1.41B
  3. 3 United States 335M
  4. 4 Indonesia 278M
  5. 5 Pakistan 241M
  6. 6 Nigeria 224M
Source UN Population Division 2024
04

World religions

Adherents (billions)

  1. 1 CH Christianity 2.4B
  2. 2 IS Islam 1.9B
  3. 3 — Unaffiliated 1.2B
  4. 4 HI Hinduism 1.2B
  5. 5 BU Buddhism 507M
  6. 6 FO Folk religions 430M
Source Pew Research Center
From the archive

Cities and landmarks, from the index.

A handful of entries pulled at random from the encyclopedia. Click any tile to read the full profile.