Japan is 1.20× the size of Oman

Japan covers about 374,000 km² (144,000 mi²) and Oman about 311,000 km² (120,000 mi²). Below, both outlines are drawn at one scale and centred on each other.

374,000km²Japan
311,000km²Oman

500 km

Japan
Oman

What fits

Oman is 83% of the size of Japan.
Japan is larger by 62,300 km² (24,000 mi²), which is 20% of the area of Oman.
Measured in Belgiums: Japan is about 12.2, Oman about 10.1.

How they differ

Japan also has the larger population: 123.8 million against 4.8 million, 25.6× as many people.
Per square kilometre that is 331 in Japan against 16 in Oman: Japan is 21.4× as densely populated.
Their centres are about 7,910 km apart.
A standard web map misstates the comparison: Japan at 37°N is drawn about 1.6× too large and Oman at 21°N about 1.1×, so the map shows Japan as 1.67× the size of Oman instead of 1.20×.
Together Japan and Oman cover 685,000 km², close to the size of Myanmar (663,000 km², 3.1% smaller).
The gap between them, 62,300 km², is about the size of Latvia (64,600 km²).
At Oman's density, Japan would have 5.8 million people (it has 123.8 million). At Japan's density, Oman would have 103.2 million (it has 4.8 million).
Japan's centre is 16.8° of latitude, about 1,870 km, farther north than Oman's.

Who wins on what

Measure	Winner	By
Larger area	Japan	1.20×
More people	Japan	25.6×
More crowded	Japan	21.4×
Farther north	Japan	16.8° of latitude
Stretched more on a web map	Japan	1.6× against 1.1×

Both against the same yardsticks

Yardstick	Japan	Oman
Belgium 30,700 km²	12.2×	10.1×
United Kingdom 244,000 km²	1.53×	1.28×
Germany 358,000 km²	1.04×	0.87×
France 548,000 km²	0.68×	0.57×
India 3,151,000 km²	0.12×	0.10×
Brazil 8,473,000 km²	0.04×	0.04×
United States 9,447,000 km²	0.04×	0.03×
Russia 16,980,000 km²	0.02×	0.02×

Each figure is the place's area divided by the yardstick's.

Side by side

	Japan	Oman
Area, main territory	374,000 km²144,000 mi²	311,000 km²120,000 mi²
Population	123.8 millionWikidata, 2024	4.8 millionWikidata, 2018
Density	331 per km²	16 per km²
Official area	378,000 km²Wikidata	310,000 km²Wikidata
Capital	Tokyo	Muscat
Latitude range	24°N to 46°N	17°N to 26°N
Continent	Asia	Asia

Population: Wikidata 2024 and Wikidata 2018, covering each whole country. Official figures: Wikidata (CC0).

Wikidata's official figure of 378,000 km² agrees with our measured area of 374,000 km², to within 2%.
Wikidata's official figure of 310,000 km² agrees with our measured area of 311,000 km², to within 2%.

Similar in size to Japan

Similar in size to Oman

More comparisons

Sources and method

Outlines: Natural Earth, 1:10m Admin 0 - Countries, public domain
Boundary: De facto, as drawn by Natural Earth. Main territory: the largest landmass and every part within 1,000 km of it.
Area: Measured on the WGS84 ellipsoid from the full-detail outlines, shown rounded. Comparisons use main-territory area.
Drawing: Each outline is projected with an equal-area projection centred on its own centroid, so areas stay true and the two can be laid over each other.
Data built: 2026-11-11

Full method