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UK
South Korea
Area Comparison
London is 2.6x larger than Seoul
Population Comparison
London has 1.1x fewer people than Seoul
In terms of area, London is 2.6x the size of Seoul. London spans 1,572 km² (607 mi²) while Seoul covers 605 km² (234 mi²) — a difference of 967 km². You could fit Seoul inside London approximately 2 times.
To put London's size in perspective, its area of 1,572 km² is about 1.4x smaller than Tokyo (city proper). Meanwhile, Seoul at 605 km² is about 1.3x smaller than New York City.
Capital of England and the United Kingdom. Known as "The Big Smoke", London covers 1,572 km² with a population of 9.0 million. The city was established in 43. London is known for Big Ben, Tower of London, Buckingham Palace, among other attractions. The city's main transit system is the London Underground.
London was the first city to have an underground railway, opening in 1863
Capital of South Korea and a major tech hub. Also known as "The Soul of Asia", Seoul has an area of 605 km² and is home to 9.8 million people. It was founded around 18 BC. Visitors come for Gyeongbokgung Palace, Gangnam district, K-pop culture, and much more. Getting around is easy with the Seoul Metro.
Seoul's metro area contains nearly half of South Korea's entire population
Looking beyond city limits, the Seoul metropolitan area covers 11,704 km², which is 1.4x larger than greater London at 8,382 km². The Seoul metro area is also more populous, with 25.5 million people compared to 14.3 million.
London has a population density of 5,712 people per km² — a densely populated city. Seoul, with 16,149 people per km², is an extremely dense urban environment. Seoul is noticeably denser, packing 2.8 times more people per square kilometer.
This comparison spans continents — London in Europe versus Seoul in Asia. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
London has a oceanic climate while Seoul experiences humid continental conditions. When it's noon in Seoul, it's 3:00 AM in London — a 9-hour time difference.
Size Ratio
Seoul fits inside London ~2 times
Density Gap
Seoul is 2.8x more densely populated
Time Difference
9 hours apart
The straight-line distance from London to Seoul is 8,857 km (5,504 miles), with an estimated flight time of ~10h 55m. See full distance details, including timezone difference and city facts.
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