Island
Hainan Island
Natural Earth’s outline of Hainan Island measures about 33,800 km² (13,000 mi²), the 36th largest of the 81 islands on sizeversus, and about the same size as Moldova.
50 km
- Hainan Island
- Moldova
The numbers
- 33,800km²Area, measured13,000 mi² · Natural Earth outline
- 33,200km²Area, publishedWikidata · agrees within 2%
The area is measured from the outline drawn above, on the WGS84 ellipsoid; the published figure is shown beside it, and a water body is kept only if the two are within 10%.
What the numbers say about Hainan Island
- Greenland (island), the largest of the 81 islands ranked on sizeversus, is 64.3× the size of Hainan Island; Hainan Island ranks 36th.
- Hainan Island sits between Kyushu (35,400 km²) and Prince of Wales Island (31,200 km²) in the ranking.
- Counted as a country, Hainan Island would be larger than 75 of the 212 countries listed on sizeversus and would rank 138th by area, between Taiwan (36,200 km²) and Moldova (33,200 km²).
- It is larger than 10 of the 51 US states and districts (the biggest of them is Maryland, 25,500 km²) and smaller than 41.
- It is larger than 3 of the 31 provinces and regions of China (the biggest of them is Beijing, 16,300 km²) and smaller than 28.
- The closest Chinese province is Hainan (33,800 km²): Hainan Island is about the same size as Hainan.
- Hainan Island lies at 19°N, close to the equator, where a standard web map (Web Mercator) is nearly true to size: it inflates area by only about 1.1×.
- Laid out flat, Hainan Island stretches about 214 km north to south and 250 km east to west.
- Wikidata’s published figure of 33,200 km² agrees with our measured 33,800 km², to within 2%.
About the same size as
Countries
Where it lies
Natural Earth’s outlines of China contain or lie within 4 km of the outline of Hainan Island. That is what its geometry says, and it is not a statement about who owns the water or where any border runs in it.
Names
- Hainan Islandthe name in this page’s titlesource: Wikidata’s English label
- HAINANalso calledsource: Natural Earth
Where Hainan Island ranks
Hainan Island is the 36th largest of the 81 islands on sizeversus, ranked by measured area.
Compare Hainan Island
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Sources and method
- Outline
- Natural Earth, 1:10m Geography Regions (geography_regions_polys), public domain (Geography Regions (geography_regions_polys)). Outlines of lakes are drawn at 1:10 million.
- Boundary
- A lake or a sea has no legal boundary of its own. The outline is a cartographic one, and the page says so by showing the measured area beside the published one.
- Area basis
- Measured outline: computed on the WGS84 ellipsoid from the full-detail outline and shown rounded. Published figure: Wikidata (CC0), fetched 2026-11-11. An outline is kept within 10% of the published figure and matched to other places automatically within 5%.
- Shore
- Countries whose Natural Earth outline contains or comes close to the water's outline; computed, not a statement of ownership.
- Drawing
- Each outline is projected with an equal-area projection centred on its own centroid, so areas stay true and two can be laid over each other.
- Data built
- 2026-11-11