Most historians date the “fall of the Roman Empire” to 476 CE for the Western Empire, when the last western emperor, Romulus Augustulus, was deposed; if you include the Eastern (Byzantine) Empire, a strong alternative date is 1453, when Constantinople fell to the Ottomans.

Quick Scoop

The classic date: 476 CE

When people ask “when was the fall of the Roman Empire,” they usually mean the Western Roman Empire.

  • Traditional date: 4 September 476 CE.
  • Event: The Germanic commander Odoacer forced the young emperor Romulus Augustulus to abdicate in Ravenna and sent the imperial regalia to Constantinople, ending a separate western imperial court.
  • Result: Italy came under Odoacer’s rule as “king,” nominally under the Eastern emperor, and historians long treated this as the start of the European Middle Ages.

Earlier “fall” moments

Some historians argue the empire’s real collapse began earlier and unfolded over decades.

  • 410 CE: The Visigoths sacked Rome, the first capture of the city by foreign forces in about 800 years, shocking contemporaries and symbolizing deep imperial weakness.
  • Long decline: Internal civil wars, economic troubles, heavy taxation, and repeated invasions had been undermining the empire since at least the 3rd century, so “fall” describes a long crisis rather than a single day.

What about the Eastern Empire?

If you count the Eastern Roman Empire (Byzantium) as still “Rome,” then 476 CE is not the end of the story.

  • The Eastern Empire, ruled from Constantinople, survived the western collapse and remained a powerful state for many centuries.
  • Widely cited date: 29 May 1453, when the Ottoman sultan Mehmed II captured Constantinople and killed the last emperor, Constantine XI. Many scholars, following Edward Gibbon and others, treat this as the final end of the Roman imperial line.

Different definitions, different dates

Because historians define “Roman Empire” and “fall” in different ways, several dates appear in serious discussions.

Here’s a quick view:

[9][1] [1][9] [5][9][1] [9][5] [3][7][9] [7][3][9]
Date What happened? Why some say “it fell” here
410 CE Sack of Rome by the VisigothsFirst capture of the city in centuries, symbol of irreversible decline
476 CE Deposition of Romulus Augustulus by OdoacerTraditional “fall of the Western Roman Empire”; no more western emperor
1453 CE Fall of Constantinople to the OttomansEnd of the Eastern Roman (Byzantine) Empire and the Roman imperial line
Many modern historians emphasize that Rome changed more than it simply “dropped dead”: Roman law, Christianity, and institutions carried on in medieval kingdoms and in the Eastern Empire long after any of these dates.

So, for your question “when was the fall of the Roman Empire,” do you mainly want a quick school-style date to remember, or a deeper breakdown of the long decline and its causes?