Berlin
892 km²
Hanoi
3,359 km²
Germany
Vietnam
Area Comparison
Berlin is 3.8x smaller than Hanoi
Population Comparison
Berlin has 2.2x fewer people than Hanoi
Hanoi is significantly larger, covering 3.8 times the area of Berlin. Hanoi spans 3,359 km² (1,297 mi²) while Berlin covers 892 km² (344 mi²) — a difference of 2,467 km². You could fit Berlin inside Hanoi approximately 3 times.
To put Berlin's size in perspective, its area of 892 km² is about 1.1x the size of New York City. Meanwhile, Hanoi at 3,359 km² is about 1.2x smaller than Rhode Island.
Berlin's footprint is roughly about 125,000 American football fields, 15 times the area of Manhattan, or 8 times the area of Paris — pick whichever unit feels intuitive. For Hanoi, that's about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris.
Berlin is the capital of Germany, as well as its largest city by both area and population. With 3.7 million inhabitants, it has the highest population within its city limits of any city in the European Union. The city is also one of the states of Germany, being the third-smallest state in the country by area. Berlin is surrounded by the state of Brandenburg, bordering Brandenburg's capital Potsdam to the southwest.
Berlin covers 892 km² with a population of 3.6 million. The city was established in 1237. Berlin is known for Brandenburg Gate, Berlin Wall, Reichstag Building, among other attractions. The city's main transit system is the BVG (U-Bahn & S-Bahn).
Berlin holds the highest population within city limits of any city in the European Union, with 3.7 million inhabitants.
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.
Often called "City Between Rivers", Hanoi has an area of 3,359 km² and is home to 8.1 million people. Its history stretches back to 1010. Visitors come for Hoan Kiem Lake, Old Quarter, Temple of Literature, and much more. Getting around is easy with the Hanoi Metro.
Hanoi encompasses 3,358.6 square kilometers and had a population of nearly 8.8 million as of 2025.
Looking beyond city limits, the Berlin metropolitan area covers 3,743 km², which is 1.1x larger than greater Hanoi at 3,359 km². The Hanoi metro area is also more populous, with 8.1 million people compared to 6.1 million.
Berlin has a population density of 4,092 people per km² — a moderately dense city. Hanoi, with 2,397 people per km², is a moderately dense city. Berlin is noticeably denser, packing 1.7 times more people per square kilometer.
This comparison spans continents — Berlin in Europe versus Hanoi in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Berlin has a oceanic climate while Hanoi experiences humid subtropical conditions. Winters differ dramatically: Hanoi stays around 17°C while Berlin drops to 1°C. When it's noon in Hanoi, it's 6:00 AM in Berlin — a 6-hour time difference.
Size Ratio
Berlin fits inside Hanoi ~3 times
Density Gap
Berlin is 1.7x more densely populated
Time Difference
6 hours apart
History
Hanoi is ~227 years older
Berlin covers 892 km². Cities with a similar urban footprint include Santiago (838 km²), Kyoto (828 km²), San Diego (964 km²), Abu Dhabi (972 km²), or Dallas (997 km²).
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).
The straight-line distance from Berlin to Hanoi is 8,327 km (5,174 miles), with an estimated flight time of ~10h 18m.
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