Bangkok
1,569 km²
Osaka
225 km²
Thailand
Japan
Area Comparison
Bangkok is 7.0x larger than Osaka
Population Comparison
Bangkok has 3.8x more people than Osaka
In terms of area, Bangkok is 7.0x the size of Osaka. Bangkok spans 1,569 km² (606 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 1,344 km². You could fit Osaka inside Bangkok approximately 6 times.
To put Bangkok's size in perspective, its area of 1,569 km² is roughly the same size as London. Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Bangkok's footprint is roughly about 220,000 American football fields, 27 times the area of Manhattan, or 15 times the area of Paris — pick whichever unit feels intuitive. Osaka works out to about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.
Bangkok, officially known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in central Thailand and has an estimated population of 11.4 million people as of 2024, 15.9% of the country's population.
Known as "City of Angels", Bangkok covers 1,569 km² with a population of 10.5 million. The city was established in 1782. Bangkok is known for Grand Palace, Wat Arun, Wat Pho, among other attractions. The city's main transit system is the BTS Skytrain & MRT.
Bangkok's official Thai name is Krung Thep Maha Nakhon, with the full ceremonial name being one of the longest place names in the world.
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…
Nicknamed "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.
Looking beyond city limits, the Osaka metropolitan area covers 13,228 km², which is 1.7x larger than greater Bangkok at 7,762 km². The Osaka metro area is also more populous, with 19.3 million people compared to 16.2 million.
Bangkok has a population density of 6,718 people per km² — a densely populated city. Osaka, with 12,222 people per km², is an extremely dense urban environment. Osaka is noticeably denser, packing 1.8 times more people per square kilometer.
Both cities are in Asia, but they represent different national approaches to urban development. Bangkok (Thailand) and Osaka (Japan) offer a fascinating regional contrast.
Bangkok has a tropical savanna climate while Osaka experiences humid subtropical conditions. Winters differ dramatically: Bangkok stays around 26°C while Osaka drops to 5°C. When it's noon in Osaka, it's 10:00 AM in Bangkok — a 2-hour time difference.
Size Ratio
Osaka fits inside Bangkok ~6 times
Density Gap
Osaka is 1.8x more densely populated
History
Osaka is ~1,137 years older
Bangkok covers 1,569 km². Cities with a similar urban footprint include London (1,572 km²), Bogotá (1,578 km²), São Paulo (1,521 km²), Johannesburg (1,644 km²), or Mexico City (1,485 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 Bangkok to Osaka is 4,210 km (2,616 miles), with an estimated flight time of ~5h 27m.
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