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Vietnam
Iran
Area Comparison
Hanoi is 4.6x larger than Tehran
Population Comparison
Hanoi has 1.1x fewer people than Tehran
In terms of area, Hanoi is 4.6x the size of Tehran. Hanoi spans 3,359 km² (1,297 mi²) while Tehran covers 730 km² (282 mi²) — a difference of 2,629 km². You could fit Tehran inside Hanoi approximately 4 times.
To put Hanoi's size in perspective, its area of 3,359 km² is about 1.2x smaller than Rhode Island. Meanwhile, Tehran at 730 km² is roughly the same size as New York City.
Vietnam's capital with over a thousand years of history. Known as "The City of the Ascending Dragon", Hanoi covers 3,359 km² with a population of 8.1 million. The city was established in 1010. Hanoi is known for Hoàn Kiếm Lake, Old Quarter (36 Streets), Ho Chi Minh Mausoleum, among other attractions. The city's main transit system is the Hanoi Metro.
Hanoi's Old Quarter has been a trading hub for nearly 1,000 years, with each street historically dedicated to a specific trade
Iran's capital and largest city. Often called "The City of 72 Nations", Tehran has an area of 730 km² and is home to 9.1 million people. The city dates back to 1524. Visitors come for Golestan Palace, Grand Bazaar, Milad Tower, and much more. Getting around is easy with the Tehran Metro.
Tehran sits at the foot of Mount Damavand, the highest volcano in Asia at 5,610 meters
Looking beyond city limits, the Hanoi metropolitan area covers 3,359 km², which is 1.5x larger than greater Tehran at 2,235 km². The Tehran metro area is also more populous, with 16.0 million people compared to 8.1 million.
Hanoi has a population density of 2,397 people per km² — a moderately dense city. Tehran, with 12,507 people per km², is an extremely dense urban environment. Tehran is dramatically more crowded, with 5.2x the population density.
Both cities are in Asia, but they represent different national approaches to urban development. Hanoi (Vietnam) and Tehran (Iran) offer a fascinating regional contrast.
Hanoi has a humid subtropical climate while Tehran experiences hot-summer Mediterranean conditions. When it's noon in Hanoi, it's 8.5:00 AM in Tehran — a 3.5-hour time difference.
Size Ratio
Tehran fits inside Hanoi ~4 times
Density Gap
Tehran is 5.2x more densely populated
Time Difference
3.5 hours apart
History
Hanoi is ~514 years older
The straight-line distance from Hanoi to Tehran is 5,498 km (3,416 miles), with an estimated flight time of ~6h 58m. See full distance details, including timezone difference and city facts.
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