Island
Borneo
Natural Earth’s outline of Borneo measures about 725,000 km² (280,000 mi²), the 3rd largest of the 81 islands on sizeversus, and about the same size as Chile.
500 km
- Chile
- Borneo
The numbers
- 725,000km²Area, measured280,000 mi² · Natural Earth outline
- 748,000km²Area, publishedWikidata · 3.1% above our measure
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 Borneo
- Greenland (island), the largest of the 81 islands ranked on sizeversus, is 3.00× the size of Borneo; Borneo ranks 3rd.
- Borneo sits between New Guinea (775,000 km²) and Madagascar (island) (589,000 km²) in the ranking.
- Counted as a country, Borneo would be larger than 173 of the 212 countries listed on sizeversus and would rank 40th by area, between Chile (736,000 km²) and Myanmar (663,000 km²).
- It is larger than 50 of the 51 US states and districts (the biggest of them is Texas, 685,000 km²) and smaller than 1.
- It is larger than 28 of the 31 provinces and regions of China (the biggest of them is Qinghai, 714,000 km²) and smaller than 3.
- The closest Chinese province is Qinghai (714,000 km²): Borneo is about the same size as Qinghai.
- Borneo lies at 1°N, close to the equator, where a standard web map (Web Mercator) is nearly true to size: it inflates area by only about 1.0×.
- Laid out flat, Borneo stretches about 1,240 km north to south and 1,150 km east to west.
- Our measured 725,000 km² is 3.1% below Wikidata’s published figure of 748,000 km². Published areas of lakes and seas move with the water level and with what is counted, so a few percent is expected.
About the same size as
Countries
Chinese provinces
Where it lies
Natural Earth’s outlines of Indonesia and Malaysia contain or lie within 4 km of the outline of Borneo. That is what its geometry says, and it is not a statement about who owns the water or where any border runs in it.
Where Borneo ranks
Borneo is the 3rd largest of the 81 islands on sizeversus, ranked by measured area.
Compare Borneo
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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