Island

Cornwallis Island

Natural Earth’s outline of Cornwallis Island measures about 6,710 km² (2,590 mi²), the 76th largest of the 81 islands on sizeversus, and 1.17× the size of Brunei.

50 km
  • Cornwallis Island
  • Brunei

The numbers

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 Cornwallis Island

About the same size as

Where it lies

Natural Earth’s outlines of Canada contain or lie within 4 km of the outline of Cornwallis 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

Where Cornwallis Island ranks

Cornwallis Island is the 76th largest of the 81 islands on sizeversus, ranked by measured area.

Ranked islands

  1. 73Anticosti Island7,700 km²
  2. 74Roosevelt Island7,500 km²
  3. 75Wrangel Island7,100 km²
  4. 76Cornwallis Island6,710 km²
  5. 77Zealand6,680 km²
  6. 78East Falkland6,480 km²
  7. 79New Siberia6,080 km²

All islands, matched to countries

Share this outline

Outline of Cornwallis Island, about 6,710 km², drawn to true scale
Outlines are drawn at true scale.
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

Full method