Hainan is 1.10× the size of Great Bear Lake

Hainan (province) covers about 33,800 km² (13,100 mi²) and Great Bear Lake (lake) about 30,900 km² (11,900 mi²). Below, both outlines are drawn at one scale and centred on each other. The Great Bear Lake outline is Natural Earth’s, checked against the published area.

33,800km²Hainan
30,900km²Great Bear Lake

100 km

Hainan
Great Bear Lake

What fits

Great Bear Lake is 91% of the size of Hainan.
Hainan is larger by 2,980 km² (1,150 mi²), which is 9.6% of the area of Great Bear Lake.
Measured in Belgiums: Hainan is about 1.10, Great Bear Lake about 1.01.

How they differ

Their centres are about 9,640 km apart.
On a standard web map Great Bear Lake looks larger than Hainan: Hainan at 19°N is drawn about 1.1× too large and Great Bear Lake at 66°N about 6.1×, so the map shows Great Bear Lake as 4.92× the size of Hainan, when Hainan is 1.10× the size of Great Bear Lake.
Together Hainan and Great Bear Lake cover 64,700 km², close to the size of Latvia (64,600 km², 0.2% smaller).
The gap between them, 2,980 km², is about the size of Samoa (2,780 km²).
Great Bear Lake's centre is 46.8° of latitude, about 5,210 km, farther north than Hainan's.
Hainan is a province of China; it is not drawn with its waters removed, and its measured area is the Natural Earth outline's.
Great Bear Lake is a lake and ranks 8th of the 104 lakes on sizeversus by area.
Laid out flat, Hainan stretches about 222 km north to south and 254 km east to west; Great Bear Lake about 249 km by 342 km.
Poured over Hainan, the 2,236 km³ that Wikidata records for Great Bear Lake would stand 66 m deep.
Wikidata’s published figure of 31,200 km² agrees with our measured 30,900 km², to within 2%.

Who wins on what

Measure	Winner	By
Larger area	Hainan	1.10×
Farther north	Great Bear Lake	46.8° of latitude
Stretched more on a web map	Great Bear Lake	6.1× against 1.1×

Both against the same yardsticks

Yardstick	Hainan	Great Bear Lake
Belgium 30,700 km²	1.10×	1.01×
United Kingdom 244,000 km²	0.14×	0.13×
Germany 358,000 km²	0.09×	0.09×
Japan 374,000 km²	0.09×	0.08×
France 548,000 km²	0.06×	0.06×
India 3,151,000 km²	0.01×	0.01×
Brazil 8,473,000 km²	1 in 250	1 in 275
United States 9,447,000 km²	1 in 279	1 in 306
Russia 16,980,000 km²	1 in 502	1 in 550

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

Side by side

	Hainan	Great Bear Lake
Is a	ProvinceChina	Lakelake on sizeversus
Area, measured	33,800 km²13,100 mi²	30,900 km²11,900 mi²
Area, published	33,900 km²Wikidata	31,200 km²Wikidata
Rank by area	–	8th of 104lakes
Greatest depth	–	446 mWikidata
Volume	–	2,236 km³
Latitude range	18°N to 20°N	65°N to 67°N
On the shore	–	1 on the shore

Published figures: Wikidata (CC0). A lake or a sea has no legal boundary: the measured area is that of Natural Earth’s outline, and it is shown beside the published one.

Natural Earth’s outlines of Canada contain or lie within 4 km of the outline of Great Bear Lake. That is what its geometry says, and it is not a statement about who owns the water or where any border runs in it.

Similar in size to Hainan

Similar in size to Great Bear Lake

More comparisons

Sources and method

Outlines: Lakes and seas: Natural Earth 1:10m physical vectors (public domain), kept only where the measured area is within 10% of the published one. Countries and regions: Natural Earth, 1:10m Admin 0 and Admin 1, public domain.
Boundary: De facto, as drawn by Natural Earth. A lake or a sea has no legal boundary of its own; the outline is a cartographic one.
Area: Measured on the WGS84 ellipsoid from the full-detail outlines, shown rounded. The published figure comes from Wikidata (CC0), fetched 2026-11-11, and is shown beside the measured one.
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