Oslo
454 km²
Perth
6,417 km²
Norway
Australia
Area Comparison
Oslo is 14.1x smaller than Perth
Population Comparison
Oslo has 3.0x fewer people than Perth
In terms of area, Perth is 14.1x the size of Oslo. Perth spans 6,417 km² (2,478 mi²) while Oslo covers 454 km² (175 mi²) — a difference of 5,963 km². You could fit Oslo inside Perth approximately 14 times.
To put Oslo's size in perspective, its area of 454 km² is about 1.3x smaller than Seoul. Meanwhile, Perth at 6,417 km² is roughly the same size as Shanghai.
Picture Oslo another way: its area is large enough to fit about 64,000 American football fields, 130 times the area of Central Park, or 8 times the area of Manhattan. For Perth, that's about 899,000 American football fields, 110 times the area of Manhattan, or 61 times the area of Paris.
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.
Known as "Tigerstaden", Oslo covers 454 km² with a population of 0.7 million. The city was established in 1048. Oslo is known for Vigeland Park, Oslo Opera House, Akershus Fortress, among other attractions.
Oslo is both a county and a municipality, with the city itself home to about 724,000 residents in 2025.
Perth is the capital city of Western Australia. It is the fourth-most-populous city in Australia, with a population of over 2.3 million within Greater Perth as of 2023. The world's most isolated major city by certain criteria, Perth is part of the South West Land Division of Western Australia, with most of Perth's metropolitan area on the Swan Coastal Plain between the Indian Ocean and the Darling Scarp.
Also known as "City of Light", Perth has an area of 6,417 km² and is home to 2.1 million people. The city dates back to 1829. Visitors come for Swan River, Kings Park, Cottesloe Beach, and much more.
Perth is considered the world's most isolated major city by certain criteria, sitting on Australia's west coast.
Oslo has a population density of 1,586 people per km² — a relatively spread-out city. Perth, with 333 people per km², is a low-density, sprawling urban area. Oslo is dramatically more crowded, with 4.8x the population density.
Size Ratio
Oslo fits inside Perth ~14 times
Density Gap
Oslo is 4.8x more densely populated
History
Oslo is ~781 years older
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).
Perth covers 6,417 km². Cities with a similar urban footprint include Shanghai (6,341 km²), Guangzhou (7,434 km²), Istanbul (5,461 km²), Wuhan (8,569 km²), or Melbourne (9,993 km²).
The straight-line distance from Oslo to Perth is 13,863 km (8,614 miles), with an estimated flight time of ~16h 49m.
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