Nairobi
696 km²
Perth
6,417 km²
Kenya
Australia
Area Comparison
Nairobi is 9.2x smaller than Perth
Population Comparison
Nairobi has 2.2x more people than Perth
In terms of area, Perth is 9.2x the size of Nairobi. Perth spans 6,417 km² (2,478 mi²) while Nairobi covers 696 km² (269 mi²) — a difference of 5,721 km². You could fit Nairobi inside Perth approximately 9 times.
To put Nairobi's size in perspective, its area of 696 km² is about 1.1x smaller than New York City. Meanwhile, Perth at 6,417 km² is roughly the same size as Shanghai.
Nairobi's footprint is roughly about 97,000 American football fields, 12 times the area of Manhattan, or 7 times the area of Paris — pick whichever unit feels intuitive. For Perth, that's about 899,000 American football fields, 110 times the area of Manhattan, or 61 times the area of Paris.
Nairobi is the capital and largest city of Kenya, located in the south-central part of the country. As of 2024, it has a population of 4.8 million and a metropolitan population of 5.7 million, making it the 11th most populous city in Africa. Nicknamed the "Green City under the Sun", Nairobi is uniquely notable for being the only capital city in the world that hosts a national park within its boundaries. Its name originates from the Maasai phrase Enkare Nyirobi, meaning "place of cool waters".
Known as "Green City under the Sun", Nairobi covers 696 km² with a population of 4.7 million. The city was established in 1899. Nairobi is known for Nairobi National Park, Giraffe Centre, Karen Blixen Museum, among other attractions. The city's main transit system is the Nairobi Commuter Rail.
Nairobi is the only capital city in the world that hosts a national park within its boundaries.
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.
Nicknamed "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.
Nairobi has a population density of 6,796 people per km² — a densely populated city. Perth, with 333 people per km², is a low-density, sprawling urban area. Nairobi is dramatically more crowded, with 20.4x the population density.
Size Ratio
Nairobi fits inside Perth ~9 times
Density Gap
Nairobi is 20.4x more densely populated
Nairobi covers 696 km². Cities with a similar urban footprint include Tehran (730 km²), Jakarta (662 km²), Singapore (733 km²), Bangalore (741 km²), or Hyderabad (650 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 Nairobi to Perth is 8,898 km (5,529 miles), with an estimated flight time of ~10h 58m.
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