Greenland is far north.
Its geographic centre is around 72° north. On a Mercator world map, scale grows rapidly as latitude approaches the poles.
Globe Curiosities · Map Projections
Greenland is enormous — but many familiar world maps make it look far larger than it really is. The reason is not Greenland. It is what happens when a round Earth is flattened.
01 · The illusion
If you grew up looking at rectangular world maps, Greenland may feel almost continent-sized. On some Mercator maps it can even appear comparable to South America.
In reality, Greenland covers about 2.17 million square kilometers. The U.S. Geological Survey notes that South America is roughly eight times as large.
The difference comes from map projection: the mathematical process used to transfer Earth's curved surface onto a flat rectangle.
02 · Flattening Earth
On the Mercator projection, meridians remain parallel while the spacing between latitude lines grows toward the poles. That expansion preserves local angles but sacrifices true area.
Conceptual Mercator distortion diagram. The squares illustrate local scale expansion with latitude, not the outline of Greenland.
03 · Move north
Move the slider from the Equator toward Greenland's central latitude. The numbers show the local mathematical scale factor of the Mercator projection.
Important: the area multiplier shown here is the local Mercator scale at the selected latitude. Greenland spans many latitudes, so it should not be read as a single multiplier for the entire island.
04 · True area
These circles compare area only. If Greenland is one unit, South America occupies roughly eight such units according to the USGS comparison.
This comparison uses circles deliberately: it isolates area from coastline shape and avoids introducing another projection into the explanation.
05 · Why it happens
Its geographic centre is around 72° north. On a Mercator world map, scale grows rapidly as latitude approaches the poles.
The projection became valuable for navigation because constant compass bearings can be represented as straight lines on the map.
No flat world map can preserve every geographic property. Mercator's strength in direction and local shape comes with severe area distortion toward the poles.
06 · Not a broken map
Calling Mercator “wrong” misses the point. Every flat world map makes compromises. The important question is what a projection is designed to preserve — and what it allows to distort.
07 · Methodology
Statistics Greenland reports Greenland's total area as 2,166,086 km² and gives approximately 72°N, 40°W for its geographic centre.
The U.S. Geological Survey explains that no flat map can preserve direction, distance, area and shape simultaneously. It specifically notes that the basic Mercator projection strongly distorts distances and areas near the polar regions.
The USGS also uses Greenland as a practical example, noting that Greenland can appear larger than South America even though South America is roughly eight times as large.
The interactive latitude calculator uses the standard spherical Mercator local scale relationship: linear scale = 1 / cos(latitude), with local area scaling proportional to the square of that value.
Keep exploring
Follow another geographic illusion, cross the International Date Line, or return to the Globe Curiosities collection.