which is the largest desert in the world?

The largest desert in the world is Antarctica. Scientifically, deserts are defined by low precipitation—less than 250 mm (10 inches) annually—not just heat or sand, making the vast Antarctic Polar Desert the undisputed champion at about 13.8 million square kilometers (5.34 million square miles).

This icy expanse dwarfs even the Sahara, challenging the sandy stereotype many hold. Precipitation here is mostly snow, averaging under 200 mm yearly in the interior, qualifying it fully under arid criteria.

Size Comparison

Desert| Area (sq km)| Type| Location 139
---|---|---|---
Antarctic| 13,800,000| Cold/Polar| Antarctica
Arctic| 13,985,000*| Cold/Polar| Arctic regions
Sahara| 9,200,000| Hot| North Africa

*Arctic sometimes ranks second, but Antarctic consistently tops lists.

Common Misconception

Most think Sahara due to its fame and scorching image—spanning 30% of Africa across 11 countries, it's the largest hot desert. Yet area-wise, polar giants prevail, a fact Britannica and others affirm.

Other Top Deserts

• Arctic Desert : Covers northern Alaska, Canada, Greenland; frigid and tundra-like.

• Sahara : Iconic dunes, oases; spans Algeria to Egypt.

• Arabian : 2.3 million sq km in the Middle East.

• Gobi : Cold, rocky in Mongolia/China.

Debates arise online—forums like Reddit often spark "Sahara vs. Antarctica" threads, with some insisting on "hot" qualifiers for relevance. Scientifically, though, Antarctica holds the title as of 2026 data.

TL;DR : Antarctica's Polar Desert is the world's largest by area, not Sahara—despite the latter's heat fame.

Information gathered from public forums or data available on the internet and portrayed here.