How big is United Kingdom?

United Kingdom encloses approximately 239,611 km² in this site’s Natural Earth boundary dataset. The United Kingdom is smaller than Japan in this boundary dataset. Their island shapes and different latitudes make them a useful test of visual intuition.

Map-derived area
239,611 km²
Area order
80 of 241 mapped places
Representative latitude
54.4° N
Mercator area scale at that point
3.0× its equatorial scale

What the map shows

Mercator expands the United Kingdom more at its representative latitude than it expands Japan at Japan’s anchor. Compare the fixed figures, or use the equal-area map, before drawing a conclusion from the familiar world view.

The Mercator factor above is calculated at one representative point. It changes across the country and describes map enlargement, not a change in its real area. See United Kingdom at its original position, then open the equal-area view.

United Kingdom compared with Japan

Japan is 1.54× the area of United Kingdom in this dataset. The bars below encode area as length, with the larger area spanning the full line.

United Kingdom239,611 km²
Japan370,099 km²
Bar lengths show the ratio of the two boundary-derived area estimates. They do not show how one outline would physically fit inside the other.

Read the full comparison or place the outlines together on the map.

Places nearby in the area order

The entries immediately above and below United Kingdom in the same mapped dataset are shown here. A different source or an official land-area ranking can put close places in another order.

What this area figure includes

The entry is the United Kingdom feature in Natural Earth, rather than a sum of every territory linked to it politically. Some territories appear as separate mapped places, which is why the exact scope matters.

The area is calculated from the original Natural Earth 1:50m Admin 0 countries polygon. It is a consistent estimate for this map, not a certified land or total-area statistic. Read the area definitions before using the figure in research or teaching.