True size

The true size of countries

World maps distort area: Greenland looks as big as Africa, yet it’s 14 times smaller. Drag a country’s outline somewhere else and see its true size.

Map projection

Outlines on the map

Drag an outline with your mouse or finger; with the keyboard: Tab, then the arrow keys (hold Shift to go faster). The scale shows how many times larger the outline is at that spot on the map than at the equator.

    How it works

    A globe can’t be flattened onto a map without distortion. The Mercator projection (Google Maps, OpenStreetMap) keeps shapes true over small areas but enlarges everything far from the equator – four times at the 60th parallel, infinitely at the poles. That’s why Greenland, Canada and Russia look huge and Africa looks small.

    A moved outline is rotated across the globe: every point on the border keeps its distance and direction from the centre of the country, so the true shape and area stay the same – only the way the map draws them changes. Areas are calculated from the same outlines (Natural Earth, public domain; accurate to about 3%). Territories far from the country (e.g. Alaska, French Guiana) stay where they are.

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