Johannesburg
1,644 km²
Perth
6,417 km²
South Africa
Australia
Area Comparison
Johannesburg is 3.9x smaller than Perth
Population Comparison
Johannesburg has 2.2x more people than Perth
Perth is significantly larger, covering 3.9 times the area of Johannesburg. Perth spans 6,417 km² (2,478 mi²) while Johannesburg covers 1,644 km² (635 mi²) — a difference of 4,773 km². You could fit Johannesburg inside Perth approximately 3 times.
To put Johannesburg's size in perspective, its area of 1,644 km² is roughly the same size as London. Meanwhile, Perth at 6,417 km² is roughly the same size as Shanghai.
Picture Johannesburg another way: its area is large enough to fit about 230,000 American football fields, 28 times the area of Manhattan, or 16 times the area of Paris. Perth works out to about 899,000 American football fields, 110 times the area of Manhattan, or 61 times the area of Paris.
Johannesburg, colloquially known as Jozi, Joburg or "The City of Gold", is the most populous city in South Africa. The City of Johannesburg itself has a population of 5,538,596, while the City of Johannesburg Metropolitan Municipality has a population of 6,599,190, making it one of the 100 largest urban areas in the world. Johannesburg is the provincial capital of Gauteng, the wealthiest province in South Africa, and seat of the country's highest court, the Constitutional Court.
Known as "Jozi", Johannesburg covers 1,644 km² with a population of 4.8 million. The city was established in 1886. Johannesburg is known for Apartheid Museum, Soweto township, Constitutional Court, among other attractions.
Johannesburg ranks among the world's 100 largest urban areas, with a metro population of about 6.6 million.
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. Its history stretches 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.
Johannesburg has a population density of 2,920 people per km² — a moderately dense city. Perth, with 333 people per km², is a low-density, sprawling urban area. Johannesburg is dramatically more crowded, with 8.8x the population density.
Size Ratio
Johannesburg fits inside Perth ~3 times
Density Gap
Johannesburg is 8.8x more densely populated
Johannesburg covers 1,644 km². Cities with a similar urban footprint include Bogotá (1,578 km²), London (1,572 km²), Bangkok (1,569 km²), Houston (1,725 km²), or São Paulo (1,521 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 Johannesburg to Perth is 8,314 km (5,166 miles), with an estimated flight time of ~10h 17m.
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