Cairo
3,085 km²
Hanoi
3,359 km²
Egypt
Vietnam
Area Comparison
Cairo is 1.1x smaller than Hanoi
Population Comparison
Cairo has 1.3x more people than Hanoi
Yes — Hanoi is 1.1x larger than Cairo by area. Hanoi spans 3,359 km² (1,297 mi²) while Cairo covers 3,085 km² (1,191 mi²) — a difference of 274 km².
To put Cairo's size in perspective, its area of 3,085 km² is about 1.2x the size of Luxembourg. Meanwhile, Hanoi at 3,359 km² is about 1.2x smaller than Rhode Island.
In more relatable units, Cairo's 3,085 km² is about 432,000 American football fields, 52 times the area of Manhattan, or 29 times the area of Paris. Hanoi, by comparison, equals about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris.
Cairo is the capital and largest city of Egypt and the Cairo Governorate. It is home to more than 9.8 million people. It is also part of the largest urban agglomeration in Africa, the Arab world, and the Middle East. The Greater Cairo metropolitan area is one of the largest in the world by population with over 22 million people. Areas of what would become Cairo were inhabited from pre-dynastic and early-dynastic ancient Egypt c.
Known as "The City of a Thousand Minarets", Cairo covers 3,085 km² with a population of 10.1 million. The city was established in 969. Cairo is known for Pyramids of Giza, Great Sphinx, Egyptian Museum, among other attractions. The city's main transit system is the Cairo Metro.
Cairo is home to more than 9.8 million people and is part of the largest urban agglomeration in Africa and the Arab world.
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. It was established in 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 Cairo metropolitan area covers 6,588 km², which is 2.0x larger than greater Hanoi at 3,359 km². The Cairo metro area is also more populous, with 21.3 million people compared to 8.1 million.
Cairo has a population density of 3,274 people per km² — a moderately dense city. Hanoi, with 2,397 people per km², is a moderately dense city. Both cities have comparable density, though Cairo is slightly more compact.
This comparison spans continents — Cairo in Africa versus Hanoi in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Cairo has a hot desert climate while Hanoi experiences humid subtropical conditions. When it's noon in Hanoi, it's 7:00 AM in Cairo — a 5-hour time difference.
Density Gap
Cairo is 1.4x more densely populated
Time Difference
5 hours apart
Cairo covers 3,085 km². Cities with a similar urban footprint include Hanoi (3,359 km²), Karachi (3,527 km²), Lima (2,672 km²), Moscow (2,511 km²), or Cape Town (2,455 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 Cairo to Hanoi is 7,426 km (4,614 miles), with an estimated flight time of ~9h 14m.
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