Helsinki
214 km²
Osaka
225 km²
Finland
Japan
Area Comparison
Helsinki is 1.1x smaller than Osaka
Population Comparison
Helsinki has 4.0x fewer people than Osaka
Osaka is significantly larger, covering 1.1 times the area of Helsinki. Osaka spans 225 km² (87 mi²) while Helsinki covers 214 km² (83 mi²) — a difference of 11 km².
To put Helsinki's size in perspective, its area of 214 km² is roughly the same size as Amsterdam. Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Picture Helsinki another way: its area is large enough to fit about 30,000 American football fields, 110 times the area of Monaco, or 63 times the area of Central Park. For Osaka, that's about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.
Helsinki is the capital and most populous city in Finland. It is on the shore of the Gulf of Finland and is the seat of southern Finland's Uusimaa region. About 694,000 people live in the municipality, with 1.3 million in the capital region and 1.6 million in the metropolitan area. As the most populous urban area in Finland, it is the country's most significant centre for politics, education, finance, culture, and research.
Known as "Daughter of the Baltic", Helsinki covers 214 km² with a population of 0.7 million. The city was established in 1550. Helsinki is known for Helsinki Cathedral, Suomenlinna fortress, Temppeliaukio Church, among other attractions.
Helsinki sits on the shore of the Gulf of Finland and serves as the capital of Finland's Uusimaa region.
Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third-most populous city in Japan, following the special wards of Tokyo and Yokohama. With an estimated population of 2,816,247 as of October 1, 2025 and a population density of about 12,505 people per square kilometer, it is the largest component of the Keihanshin Metropolitan Area, the second-largest metropolitan area in Japan and the 10th-largest urban…
Also known as "Nation's Kitchen", Osaka has an area of 225 km² and is home to 2.8 million people. Its history stretches back to 645. Visitors come for Osaka Castle, Dotonbori district, Universal Studios Japan, and much more. Getting around is easy with the Osaka Metro.
Osaka is the third-most populous city in Japan, following the special wards of Tokyo and Yokohama.
Helsinki has a population density of 3,224 people per km² — a moderately dense city. Osaka, with 12,222 people per km², is an extremely dense urban environment. Osaka is dramatically more crowded, with 3.8x the population density.
Helsinki has a warm-summer humid continental climate climate while Osaka experiences humid subtropical conditions.
Density Gap
Osaka is 3.8x more densely populated
History
Osaka is ~905 years older
Helsinki covers 214 km². Cities with a similar urban footprint include Amsterdam (219 km²), Osaka (225 km²), Buenos Aires (203 km²), Boston (232 km²), or Kuala Lumpur (243 km²).
Osaka covers 225 km². Cities with a similar urban footprint include Amsterdam (219 km²), Boston (232 km²), Helsinki (214 km²), Kuala Lumpur (243 km²), or Buenos Aires (203 km²).
The straight-line distance from Helsinki to Osaka is 7,729 km (4,802 miles), with an estimated flight time of ~9h 36m.
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