Sea
Kattegat
Natural Earth’s outline of Kattegat measures about 24,000 km² (9,280 mi²), the 36th largest of the 42 seas on sizeversus, and 95% of the size of Rwanda.
50 km
- Rwanda
- Kattegat
The numbers
- 24,000km²Area, measured9,280 mi² · Natural Earth outline
- 25,500km²Area, publishedWikidata · 5.7% above our measure, flagged
- 109mGreatest depthWikidata
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%. This one is between 5% and 10% apart, so it is flagged and no comparison is built for it automatically.
What the numbers say about Kattegat
- The Arabian Sea, the largest of the 42 seas ranked on sizeversus, is 172× the size of Kattegat; Kattegat ranks 36th.
- Kattegat sits between the Gulf of Finland (30,400 km²) and the Gulf of Riga (18,200 km²) in the ranking.
- Counted as a country, Kattegat would be larger than 63 of the 212 countries listed on sizeversus and would rank 150th by area, between Rwanda (25,300 km²) and Belize (22,300 km²).
- It is larger than 7 of the 51 US states and districts (the biggest of them is Massachusetts, 21,200 km²) and smaller than 44.
- 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 US state is New Hampshire (24,300 km²): Kattegat is about the same size as New Hampshire.
- Wikidata records a greatest depth of 109 m.
- On a standard web map (Web Mercator), a place at 57°N is drawn about 3.4× too large in area, so Kattegat looks bigger there than it is.
- Laid out flat, Kattegat stretches about 298 km north to south and 162 km east to west.
- Our measured 24,000 km² is 5.7% below Wikidata’s published figure of 25,500 km². This difference is flagged for review: a lake’s outline may include islands or bays that the published figure leaves out, or the water level may differ. The outline is kept because it is within 10%, and this page is not matched automatically to any other.
About the same size as
Countries
On the shore
Natural Earth’s outlines of Denmark and Sweden lie within 25 km of the outline of Kattegat. 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 Kattegat ranks
Kattegat is the 36th largest of the 42 seas on sizeversus, ranked by measured area.
Share this outline
Sources and method
- Outline
- Natural Earth, 1:10m Marine Areas (geography_marine_polys), public domain (Marine Areas (geography_marine_polys)). Natural Earth draws marine areas for labels and cuts them at named sub-areas; the outline is kept because its area matches the published one.
- 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%.
- Depth, volume, height
- As recorded in Wikidata; a volume that cannot be right for the area and depth is left out.
- 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