Mumbai
603 km²
Osaka
225 km²
India
Japan
Area Comparison
Mumbai is 2.7x larger than Osaka
Population Comparison
Mumbai has 4.5x more people than Osaka
Mumbai is significantly larger, covering 2.7 times the area of Osaka. Mumbai spans 603 km² (233 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 378 km². You could fit Osaka inside Mumbai approximately 2 times.
To put Mumbai's size in perspective, its area of 603 km² is roughly the same size as Seoul. Meanwhile, Osaka at 225 km² is roughly the same size as Amsterdam.
Mumbai's footprint is roughly about 84,000 American football fields, 180 times the area of Central Park, or 10 times the area of Manhattan — pick whichever unit feels intuitive. For Osaka, that's about 32,000 American football fields, 110 times the area of Monaco, or 66 times the area of Central Park.
Mumbai, also known as Bombay, is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India, with an estimated population of 12.5 million (1.25 crore). Mumbai is the centre of the Mumbai Metropolitan Region, which is among the most populous metropolitan areas in the world with a population of over 23 million. Mumbai lies on the Konkan coast on the west coast of India and has a deep natural harbour.
Known as "Bombay", Mumbai covers 603 km² with a population of 12.4 million. The city was established in 1507. Mumbai is known for Gateway of India, Marine Drive, Bollywood, among other attractions. The city's main transit system is the Mumbai Suburban Railway.
Mumbai is the most populous city proper in India and serves as the country's financial capital with around 12.5 million residents.
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…
Often called "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 2.1x larger than greater Mumbai at 6,355 km². The Mumbai metro area is also more populous, with 20.7 million people compared to 19.3 million.
Mumbai has a population density of 20,630 people per km² — one of the most densely packed urban areas on Earth. Osaka, with 12,222 people per km², is an extremely dense urban environment. Mumbai is noticeably denser, packing 1.7 times more people per square kilometer.
Both cities are in Asia, but they represent different national approaches to urban development. Mumbai (India) and Osaka (Japan) offer a fascinating regional contrast.
Mumbai has a tropical wet and dry climate while Osaka experiences humid subtropical conditions. Winters differ dramatically: Mumbai stays around 25°C while Osaka drops to 5°C. When it's noon in Osaka, it's 8.5:00 AM in Mumbai — a 3.5-hour time difference.
Size Ratio
Osaka fits inside Mumbai ~2 times
Density Gap
Mumbai is 1.7x more densely populated
Time Difference
3.5 hours apart
History
Osaka is ~862 years older
Mumbai covers 603 km². Cities with a similar urban footprint include Madrid (604 km²), Seoul (605 km²), Chicago (606 km²), Toronto (630 km²), or Hyderabad (650 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 Mumbai to Osaka is 6,348 km (3,945 miles), with an estimated flight time of ~7h 58m.
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