Hanoi
3,359 km²
Karachi
3,527 km²
Vietnam
Pakistan
Area Comparison
Hanoi is 1.1x smaller than Karachi
Population Comparison
Hanoi has 1.9x fewer people than Karachi
Yes — Karachi is 1.1x larger than Hanoi by area. Karachi spans 3,527 km² (1,362 mi²) while Hanoi covers 3,359 km² (1,297 mi²) — a difference of 168 km².
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Karachi at 3,527 km² is about 1.1x smaller than Rhode Island.
Picture Hanoi another way: its area is large enough to fit about 470,000 American football fields, 57 times the area of Manhattan, or 32 times the area of Paris. Karachi, by comparison, equals about 494,000 American football fields, 60 times the area of Manhattan, or 33 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.
Karachi is the capital city of the province of Sindh, Pakistan. It is the largest city in Pakistan and 12th largest in the world, with a population of over 20 million. It is situated at the southern tip of the country along the Arabian Sea coast and formerly served as the country's capital from 1947 to 1959. Ranked as a beta-global city, it is Pakistan's premier industrial and financial centre, with an estimated GDP of over $200 billion (PPP) as of 2021.
Nicknamed "City of Lights", Karachi has an area of 3,527 km² and is home to 14.9 million people. It was established in 1729. Visitors come for Port of Karachi, Mazar-e-Quaid mausoleum, Clifton Beach, and much more.
Karachi is Pakistan's largest city and the 12th largest in the world, with a population of over 20 million.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Karachi, with 4,227 people per km², is a moderately dense city. Karachi is noticeably denser, packing 1.8 times more people per square kilometer.
Density Gap
Karachi is 1.8x more densely populated
History
Hanoi is ~719 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).
Karachi covers 3,527 km². Cities with a similar urban footprint include Hanoi (3,359 km²), Cairo (3,085 km²), Dubai (4,114 km²), Lima (2,672 km²), or Moscow (2,511 km²).
The straight-line distance from Hanoi to Karachi is 3,985 km (2,476 miles), with an estimated flight time of ~5h 11m.
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