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Japan
Italy
Area Comparison
Osaka is 5.7x smaller than Rome
Population Comparison
Osaka has 1.0x fewer people than Rome
Rome is significantly larger, covering 5.7 times the area of Osaka. Rome spans 1,285 km² (496 mi²) while Osaka covers 225 km² (87 mi²) — a difference of 1,060 km². You could fit Osaka inside Rome approximately 5 times.
To put Osaka's size in perspective, its area of 225 km² is roughly the same size as Amsterdam. Meanwhile, Rome at 1,285 km² is about 1.2x smaller than London.
Japan's third-largest city and a culinary capital. Known as "The Kitchen of Japan", Osaka covers 225 km² with a population of 2.8 million. The city was established in 645. Osaka is known for Osaka Castle, Dotonbori district, Street food culture, among other attractions. The city's main transit system is the Osaka Metro.
Osaka residents spend more on food per capita than any other city in Japan
Italy's capital and a city of ancient history. Nicknamed "The Eternal City", Rome has an area of 1,285 km² and is home to 2.9 million people. Its history stretches back to 753 BC. Visitors come for Colosseum, Vatican City, Trevi Fountain, and much more. Getting around is easy with the Rome Metro.
Rome contains an entire independent country within its borders — Vatican City, the world's smallest state
Looking beyond city limits, the Osaka metropolitan area covers 13,228 km², which is 2.5x larger than greater Rome at 5,352 km². The Osaka metro area is also more populous, with 19.3 million people compared to 4.3 million.
Osaka has a population density of 12,222 people per km² — an extremely dense urban environment. Rome, with 2,233 people per km², is a moderately dense city. Osaka is dramatically more crowded, with 5.5x the population density.
This comparison spans continents — Osaka in Asia versus Rome in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Osaka has a humid subtropical climate while Rome experiences Mediterranean conditions. When it's noon in Osaka, it's 4:00 AM in Rome — a 8-hour time difference.
Size Ratio
Osaka fits inside Rome ~5 times
Density Gap
Osaka is 5.5x more densely populated
Time Difference
8 hours apart
History
Rome is ~1,398 years older
The straight-line distance from Osaka to Rome is 9,709 km (6,033 miles), with an estimated flight time of ~11h 55m. See full distance details, including timezone difference and city facts.
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