Boston
232 km²
Karachi
3,527 km²
USA
Pakistan
Area Comparison
Boston is 15.2x smaller than Karachi
Population Comparison
Boston has 21.9x fewer people than Karachi
In terms of area, Karachi is 15.2x the size of Boston. Karachi spans 3,527 km² (1,362 mi²) while Boston covers 232 km² (90 mi²) — a difference of 3,295 km². You could fit Boston inside Karachi approximately 15 times.
To put Boston's size in perspective, its area of 232 km² is roughly the same size as Amsterdam. Meanwhile, Karachi at 3,527 km² is about 1.1x smaller than Rhode Island.
Boston's footprint is roughly about 32,000 American football fields, 110 times the area of Monaco, or 68 times the area of Central Park — pick whichever unit feels intuitive. Karachi works out to about 494,000 American football fields, 60 times the area of Manhattan, or 33 times the area of Paris.
Boston is the capital and most populous city of the U.S. state of Massachusetts. It serves as a cultural and financial center of New England, a region of the Northeastern United States. Boston has an area of 48.4 sq mi (125 km2) and a population of 675,647 as of the 2020 census, making it the third-most populous city in the Northeastern United States after New York City and Philadelphia.
Known as "Beantown", Boston covers 232 km² with a population of 0.7 million. The city was established in 1630. Boston is known for Fenway Park, Freedom Trail, Harvard University, among other attractions. The city's main transit system is the MBTA (The T).
Boston covers just 125 km2 yet serves as the cultural and financial heart of all New England
Karachi is the capital city of the province of Sindh, Pakistan. It is the largest city in Pakistan and 12th largest in the world, with a population of over 20 million. It is situated at the southern tip of the country along the Arabian Sea coast and formerly served as the country's capital from 1947 to 1959. Ranked as a beta-global city, it is Pakistan's premier industrial and financial centre, with an estimated GDP of over $200 billion (PPP) as of 2021.
Nicknamed "City of Lights", Karachi has an area of 3,527 km² and is home to 14.9 million people. The city dates back to 1729. Visitors come for Port of Karachi, Mazar-e-Quaid mausoleum, Clifton Beach, and much more.
Karachi is Pakistan's largest city and the 12th largest in the world, with a population of over 20 million.
Boston has a population density of 2,931 people per km² — a moderately dense city. Karachi, with 4,227 people per km², is a moderately dense city. Both cities have comparable density, though Karachi is slightly more compact.
Size Ratio
Boston fits inside Karachi ~15 times
Density Gap
Karachi is 1.4x more densely populated
Boston covers 232 km². Cities with a similar urban footprint include Osaka (225 km²), Kuala Lumpur (243 km²), Amsterdam (219 km²), Helsinki (214 km²), or Edinburgh (259 km²).
Karachi covers 3,527 km². Cities with a similar urban footprint include Hanoi (3,359 km²), Cairo (3,085 km²), Dubai (4,114 km²), Lima (2,672 km²), or Moscow (2,511 km²).
The straight-line distance from Boston to Karachi is 11,391 km (7,078 miles), with an estimated flight time of ~13h 54m.
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