276 BC - 194 BC

Photo of Eratosthenes

Icon of person Eratosthenes

Eratosthenes of Cyrene (; Greek: Ἐρατοσθένης ὁ Κυρηναῖος, romanized: Eratosthénēs ho Kurēnaĩos, IPA: [eratostʰénɛːs]; c. 276 BC – c. 195/194 BC) was a Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. Read more on Wikipedia

Since 2007, the English Wikipedia page of Eratosthenes has received more than 2,405,775 page views. His biography is available in 90 different languages on Wikipedia (up from 89 in 2019). Eratosthenes is the most popular geographer, the most popular biography from Libya and the most popular Libyan Geographer.

Eratosthenes is most famous for measuring the circumference of the Earth by comparing the shadows of two sticks in two different locations.

Memorability Metrics

  • 2.4M

    Page Views (PV)

  • 86.12

    Historical Popularity Index (HPI)

  • 90

    Languages Editions (L)

  • 12.44

    Effective Languages (L*)

  • 3.60

    Coefficient of Variation (CV)

Page views of Eratosthenes by language


Among geographers, Eratosthenes ranks 1 out of 67. After him are Strabo, Alexander von Humboldt, Gerardus Mercator, Muhammad al-Idrisi, Piri Reis, Pausanias, Abraham Ortelius, George Everest, Martin Waldseemüller, Ferdinand von Richthofen, and Wladimir Köppen.

Most Popular Geographers in Wikipedia

Go to all Rankings


Among people born in 276 BC, Eratosthenes ranks 1 Among people deceased in 194 BC, Eratosthenes ranks 1

Others Born in 276 BC

Go to all Rankings

Others Deceased in 194 BC

Go to all Rankings

In Libya

Among people born in Libya, Eratosthenes ranks 1 out of 59. After him are Muammar Gaddafi (1942), Septimius Severus (145), Arius (256), Mark the Evangelist (10), Aristippus (-434), Simon of Cyrene (-100), Callimachus (-310), Idris of Libya (1889), Omar Mukhtar (1858), Khalifa Haftar (1943), and Pope Victor I (100).


Among geographers born in Libya, Eratosthenes ranks 1