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India
USA
Area Comparison
Mumbai is 5.0x larger than San Francisco
Population Comparison
Mumbai has 14.3x more people than San Francisco
Mumbai is significantly larger, covering 5.0 times the area of San Francisco. Mumbai spans 603 km² (233 mi²) while San Francisco covers 121 km² (47 mi²) — a difference of 482 km². You could fit San Francisco inside Mumbai approximately 4 times.
To put Mumbai's size in perspective, its area of 603 km² is roughly the same size as Seoul. Meanwhile, San Francisco at 121 km² is about 1.2x the size of Paris (city proper).
India's financial capital and most populous city. Known as "The City of Dreams", Mumbai covers 603 km² with a population of 12.4 million. The city was established in 1507. Mumbai is known for Gateway of India, Bollywood film industry, Marine Drive, among other attractions. The city's main transit system is the Mumbai Suburban Railway.
Mumbai's dabbawalas deliver 200,000 lunchboxes daily with an error rate of 1 in 16 million
A cultural and financial center in Northern California. Also known as "SF", San Francisco has an area of 121 km² and is home to 0.9 million people. Its history stretches back to 1776. Visitors come for Golden Gate Bridge, Alcatraz Island, Cable cars, and much more. Getting around is easy with the BART & Muni.
San Francisco's 121 km² makes it one of the smallest major US cities by area
Looking beyond city limits, the San Francisco metropolitan area covers 6,984 km², which is 1.1x larger than greater Mumbai at 6,355 km². The Mumbai metro area is also more populous, with 20.7 million people compared to 4.7 million.
Mumbai has a population density of 20,630 people per km² — one of the most densely packed urban areas on Earth. San Francisco, with 7,190 people per km², is a densely populated city. Mumbai is noticeably denser, packing 2.9 times more people per square kilometer.
This comparison spans continents — Mumbai in Asia versus San Francisco in North America. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Mumbai has a tropical wet and dry climate while San Francisco experiences Mediterranean conditions. Summers are notably different: Mumbai averages 30°C compared to 17°C in San Francisco. When it's noon in Mumbai, it's midnight in San Francisco — a 13.5-hour time difference.
Size Ratio
San Francisco fits inside Mumbai ~4 times
Density Gap
Mumbai is 2.9x more densely populated
Time Difference
13.5 hours apart
History
Mumbai is ~269 years older
The straight-line distance from Mumbai to San Francisco is 13,494 km (8,385 miles), with an estimated flight time of ~16h 23m. See full distance details, including timezone difference and city facts.
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