Hanoi
3,359 km²
Rome
1,285 km²
Vietnam
Italy
Area Comparison
Hanoi is 2.6x larger than Rome
Population Comparison
Hanoi has 2.8x more people than Rome
Yes — Hanoi is 2.6x larger than Rome by area. Hanoi spans 3,359 km² (1,297 mi²) while Rome covers 1,285 km² (496 mi²) — a difference of 2,074 km². You could fit Rome inside Hanoi approximately 2 times.
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Rome at 1,285 km² is about 1.2x smaller than London.
In more relatable units, Hanoi's 3,359 km² is about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris. Rome works out to about 180,000 American football fields, 22 times the area of Manhattan, or 12 times the area of Paris.
Hanoi is the capital and second-most populous municipality of Vietnam. It encompasses an area of 3,358.6 km2 (1,296.8 mi2), and as of 2025 has a population of 8,807,523. Hanoi had the second-highest gross regional domestic product of all Vietnamese provinces and municipalities at US$48 billion in 2023, behind Ho Chi Minh City. It hosts 78 foreign embassies, the headquarters of the Vietnam People's Army (VPA), its Vietnam National University system, and other governmental organizations.
Known as "City Between Rivers", Hanoi covers 3,359 km² with a population of 8.1 million. The city was established in 1010. Hanoi is known for Hoan Kiem Lake, Old Quarter, Temple of Literature, among other attractions. The city's main transit system is the Hanoi Metro.
Hanoi encompasses 3,358.6 square kilometers and had a population of nearly 8.8 million as of 2025.
Rome is the capital city and most populated comune (municipality) of Italy. It is also the administrative centre of the Lazio region and of the Metropolitan City of Rome. A special comune named Roma Capitale with a population of 2.7 million in an area of 1,287.36 km2 (497.1 mi2), Rome is the third most populous city in the European Union by population within city limits. The Metropolitan City of Rome Capital, with a population of 4.2 million, is the most populous metropolitan city in Italy.
Often called "The Eternal City", Rome has an area of 1,285 km² and is home to 2.9 million people. Its history stretches back to 753 BC. Visitors come for Colosseum, Vatican City, Trevi Fountain, and much more. Getting around is easy with the Rome Metro.
Rome's special comune Roma Capitale spans 1,287 km2, making it the third most populous city in the EU within city limits
Looking beyond city limits, the Rome metropolitan area covers 5,352 km², which is 1.6x larger than greater Hanoi at 3,359 km². The Hanoi metro area is also more populous, with 8.1 million people compared to 4.3 million.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Rome, with 2,233 people per km², is a moderately dense city. Both cities have comparable density, though Hanoi is slightly more compact.
This comparison spans continents — Hanoi in Asia versus Rome in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Hanoi has a humid subtropical climate while Rome experiences Mediterranean conditions. When it's noon in Hanoi, it's 6:00 AM in Rome — a 6-hour time difference.
Size Ratio
Rome fits inside Hanoi ~2 times
Time Difference
6 hours apart
History
Rome is ~1,763 years older
Hanoi covers 3,359 km². Cities with a similar urban footprint include Karachi (3,527 km²), Cairo (3,085 km²), Dubai (4,114 km²), Lima (2,672 km²), or Moscow (2,511 km²).
Rome covers 1,285 km². Cities with a similar urban footprint include Los Angeles (1,302 km²), Phoenix (1,341 km²), Rio de Janeiro (1,221 km²), San Antonio (1,209 km²), or Lagos (1,172 km²).
The straight-line distance from Hanoi to Rome is 8,730 km (5,425 miles), with an estimated flight time of ~10h 46m.
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