equal-area

Preserving relative sizes

Equal-area describes a map projection that preserves the relative sizes of regions—a country twice as large as another appears twice as large on the map.

This accuracy in area comes at the cost of distorting shapes, especially near the edges.

The Gall-Peters projection is a famous equal-area map that stretches Africa and South America vertically while compressing northern landmasses.

projections

sinusoidal

Wave-patterned, mathematically regular

azimuthal · interrupted · lobed

properties

distortion

Twisting from original state

applications

population density

Inhabitants per unit area

Opposites
map projection properties

equal-areaconformal

Maintains angles locally

equidistant · azimuthal · Mercator · Mercator projection · stereographic

Family

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Familiarity
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Used worldwide · Timeless · Rated G