Karachi
3,527 km²
Oslo
454 km²
Pakistan
Norway
Area Comparison
Karachi is 7.8x larger than Oslo
Population Comparison
Karachi has 20.7x more people than Oslo
Yes — Karachi is 7.8x larger than Oslo by area. Karachi spans 3,527 km² (1,362 mi²) while Oslo covers 454 km² (175 mi²) — a difference of 3,073 km². You could fit Oslo inside Karachi approximately 7 times.
To put Karachi's size in perspective, its area of 3,527 km² is about 1.1x smaller than Rhode Island. Meanwhile, Oslo at 454 km² is about 1.3x smaller than Seoul.
Picture Karachi another way: its area is large enough to fit about 494,000 American football fields, 60 times the area of Manhattan, or 33 times the area of Paris. Oslo works out to about 64,000 American football fields, 130 times the area of Central Park, or 8 times the area of Manhattan.
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.
Known as "City of Lights", Karachi covers 3,527 km² with a population of 14.9 million. The city was established in 1729. Karachi is known for Port of Karachi, Mazar-e-Quaid mausoleum, Clifton Beach, among other attractions.
Karachi is Pakistan's largest city and the 12th largest in the world, with a population of over 20 million.
Oslo is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of 724,290 in 2025, while the city's greater urban area had a population of 1,110,887 in 2025, and the metropolitan area had an estimated population of 1,546,706 in 2021.
Nicknamed "Tigerstaden", Oslo has an area of 454 km² and is home to 0.7 million people. Its history stretches back to 1048. Visitors come for Vigeland Park, Oslo Opera House, Akershus Fortress, and much more.
Oslo is both a county and a municipality, with the city itself home to about 724,000 residents in 2025.
Karachi has a population density of 4,227 people per km² — a moderately dense city. Oslo, with 1,586 people per km², is a relatively spread-out city. Karachi is noticeably denser, packing 2.7 times more people per square kilometer.
Size Ratio
Oslo fits inside Karachi ~7 times
Density Gap
Karachi is 2.7x more densely populated
History
Oslo is ~681 years older
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).
Oslo covers 454 km². Cities with a similar urban footprint include Prague (496 km²), Vienna (415 km²), Montreal (498 km²), Denver (401 km²), or Warsaw (517 km²).
The straight-line distance from Karachi to Oslo is 5,777 km (3,590 miles), with an estimated flight time of ~7h 18m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.