Total & land area: Mauritania vs Niger size comparison

Niger is 1.23 times bigger by total area compared to Mauritania: 489,191 sq mi vs 397,955 sq mi. Without inland water, the land area of Niger is 489,076 sq mi vs 397,955 sq mi for Mauritania — a 1.23 times difference in territory size.

Mauritania ranks 28/197 by total surface area vs 21/197 for Niger.
Mauritania occupies 0.69% of the land mass of all countries, compared with 0.85% for Niger.
38.5% of Mauritania's area is agricultural land vs 36.8% in Niger.
Mauritania has 0.83% of the world's agricultural land area — Niger has 0.98%.
0.29% of Mauritania is covered by forests, compared to 0.82% in Niger.
0.007% of the world's forests are in Mauritania, and 0.03% are in Niger.

True size map comparison: Mauritania vs Niger

See how Mauritania and Niger compare in true size on the map. Drag the outlines to different latitudes to see how the Mercator projection affects their apparent size.

Total size and land area comparison

	Mauritania	Niger
Total area	397,955 sq mi	489,191 sq mi
Size difference ratio	1	1.23
Total area rank	28/197	21/197
Share of all countries' surface area	0.2%	0.25%
Land area	397,955 sq mi	489,076 sq mi
Land area difference ratio	1	1.23
Land area rank	28/197	20/197
Share of all countries' land area	0.69%	0.85%
Population	5,169,395	27,032,412
Population density	13.7 ppl/mi²	59 ppl/mi²

Surface area by type

	Mauritania	Niger
Forest area	1,145 sq mi	4,025 sq mi
Forest area as share of land	0.29%	0.82%
Forest area rank	149/196	124/196
World's forests share	0.007%	0.03%
Agricultural land area	153,321 sq mi	179,918 sq mi
Agricultural land share	38.5%	36.8%
Agricultural land area rank	28/194	19/194
Share of global agricultural land	0.83%	0.98%
Arable land	1,737 sq mi	68,340 sq mi
Arable land share	0.44%	14%
Arable land area rank	125/191	17/191
Permanent cropland	38.6 sq mi	450 sq mi
Permanent cropland share	0.01%	0.09%
Permanent cropland area rank	153/192	100/192
Water area	0 sq mi	115.8 sq mi
Water as share of total area	0%	0.02%
Water area rank	182/197	124/197
Roads length	7,614 mi	11,774 mi
Land borders length	3,108 mi	3,625 mi
Coastline length	469 mi	0 mi
Share of marine protected waters	3.7%	n/a

Mauritania vs Niger size on the map

Data sources: World Bank | Agriculture & Rural Development (2026, retrieved 2026-04-06).

GeoRank.org/size/mauritania/niger | CC BY

The map above outlines the borders of Mauritania and Niger but is not accurate for size comparison because it's a 2d map with Mercator projection that distorts territories near the poles. The farther a country is from the equator, the more magnified it appears. More about country size projections.