Chennai
427 km²
Osaka
225 km²
City Map Compare/Chennai vs Osakavs
vs
5 km
India
Japan
Area Comparison
Chennai is 1.9x larger than Osaka
Population Comparison
Chennai has 2.4x more people than Osaka
Chennai is significantly larger, covering 1.9 times the area of Osaka. Chennai spans 427 km² (165 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 202 km².
To put Chennai's size in perspective, its area of 427 km² is about 1.4x smaller than Seoul. Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Picture Chennai another way: its area is large enough to fit about 60,000 American football fields, 130 times the area of Central Park, or 7 times the area of Manhattan. Osaka, by comparison, equals about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.
Chennai, also known as Madras, is the capital and largest city of Tamil Nadu, the southernmost state of India. It is located on the Coromandel Coast of the Bay of Bengal. As per the 2011 Indian census, Chennai is the sixth-most-populous city in India and forms the fourth-most-populous urban agglomeration. The city is coterminous with Chennai district, which together with the adjoining suburbs constitutes the Chennai Metropolitan Area, one of the largest metropolitan areas of India.
Known as "Madras", Chennai covers 427 km² with a population of 6.6 million. The city was established in 1639. Chennai is known for Marina Beach, Kapaleeshwarar Temple, Fort St. George, among other attractions.
Chennai, formerly Madras, is the capital of Tamil Nadu and the sixth-most-populous city in India.
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. The city dates 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.
Chennai has a population density of 15,457 people per km² — an extremely dense urban environment. Osaka, with 12,222 people per km², is an extremely dense urban environment. Both cities have comparable density, though Chennai is slightly more compact.
History
Osaka is ~994 years older
Chennai covers 427 km². Cities with a similar urban footprint include Vienna (415 km²), Oslo (454 km²), Denver (401 km²), Portland (376 km²), or Philadelphia (370 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 Chennai to Osaka is 6,022 km (3,742 miles), with an estimated flight time of ~7h 35m.
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