South Korea vs Japan: surface area comparison
Using World Bank 2024 surface-area observations, South Korea is 100,460 km² and Japan is 377,974.71 km². Japan has about 3.76 times South Korea’s surface area.
Compare the areas ↗How it works
Divide 377,974.71 by 100,460 to calculate the area ratio. The visualization uses squares with sides proportional to the square root of area, so the visual areas match the measured ratio.
What to know
Surface area includes inland water. These are simplified equal-area squares, not country outlines or a map projection. Territorial definitions and data revisions can affect comparisons. Source: World Bank surface-area indicator, 2024 observations retrieved 22 October 2026.