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Spain
Vietnam
Area Comparison
Barcelona is 33.3x smaller than Hanoi
Population Comparison
Barcelona has 4.8x fewer people than Hanoi
In terms of area, Hanoi is 33.3x the size of Barcelona. Hanoi spans 3,359 km² (1,297 mi²) while Barcelona covers 101 km² (39 mi²) — a difference of 3,258 km². You could fit Barcelona inside Hanoi approximately 33 times.
To put Barcelona's size in perspective, its area of 101 km² is roughly the same size as Paris (city proper). Meanwhile, Hanoi at 3,359 km² is about 1.2x smaller than Rhode Island.
A Mediterranean city known for Gaudi's architecture. Known as "The City of Counts", Barcelona covers 101 km² with a population of 1.7 million. The city was founded around 230 BC. Barcelona is known for Sagrada Família, Park Güell, La Rambla, among other attractions. The city's main transit system is the Barcelona Metro (TMB).
Gaudí's Sagrada Família has been under construction since 1882 and is expected to be completed around 2026
Vietnam's capital with over a thousand years of history. Also known as "The City of the Ascending Dragon", Hanoi has an area of 3,359 km² and is home to 8.1 million people. It was established in 1010. Visitors come for Hoàn Kiếm Lake, Old Quarter (36 Streets), Ho Chi Minh Mausoleum, and much more. Getting around is easy with 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
Looking beyond city limits, the Hanoi metropolitan area covers 3,359 km², which is 4.2x larger than greater Barcelona at 803 km². The Hanoi metro area is also more populous, with 8.1 million people compared to 5.6 million.
Barcelona has a population density of 16,436 people per km² — an extremely dense urban environment. Hanoi, with 2,397 people per km², is a moderately dense city. Barcelona is dramatically more crowded, with 6.9x the population density.
This comparison spans continents — Barcelona in Europe versus Hanoi in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Barcelona has a Mediterranean climate while Hanoi experiences humid subtropical conditions. When it's noon in Hanoi, it's 6:00 AM in Barcelona — a 6-hour time difference.
Size Ratio
Barcelona fits inside Hanoi ~33 times
Density Gap
Barcelona is 6.9x more densely populated
Time Difference
6 hours apart
History
Barcelona is ~1,240 years older
The straight-line distance from Barcelona to Hanoi is 9,550 km (5,934 miles), with an estimated flight time of ~11h 44m. See full distance details, including timezone difference and city facts.
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