Year by year · 9th century

800 CE

800 CE in world history: 7 events and 2 states founded. 341 recorded states existed that year.

Events

  1. 1 December

    Charlemagne convenes an assembly in Rome to judge Pope Leo III

    A week after arriving in Rome, Charlemagne called an assembly in St Peter's to hear charges against Pope Leo III, who cleared himself by oath. On Christmas Day Leo crowned Charlemagne emperor.

    Holy Roman EmpirePope Leo IIICharlemagne

  2. 25 December

    Pope Leo III crowns Charlemagne emperor

    During Christmas Mass in St Peter's, Leo III crowned the Frankish king Charlemagne Emperor of the Romans. It revived a western imperial title unused since 476.

    Holy Roman EmpirePope Leo IIICharlemagne

  3. Event

    Coronation of Charlemagne

    The coronation of Charlemagne took place in Rome on Christmas Day 800 CE, when Pope Leo III crowned the Frankish king as emperor.

ProfileState239 states with a known seat in 800 CEOpen the atlas at 800 CE →

In the profiles

States founded 2

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APA
The Epoch Institute. (2026). 800 CE. In The Epoch Institute, Year by Year. https://the-epoch-institute.org/years/800
MLA
“800 CE.” The Epoch Institute, Year by Year, The Epoch Institute, 2026, https://the-epoch-institute.org/years/800. Accessed .
Chicago
The Epoch Institute. “800 CE.” The Epoch Institute, Year by Year. 2026. https://the-epoch-institute.org/years/800.
Harvard
The Epoch Institute (2026) ‘800 CE’, The Epoch Institute, Year by Year. Available at: https://the-epoch-institute.org/years/800 (Accessed: ).