It is the fourth largest Australian desert with an area of 176,500 square Kms
The Arabian Desert, located on and near the Arabian Peninsula is the largest in Asia at 2,330,000 square km.
No oceans are close to the Simpson Desert. Lying essentially in central Australia, the Simpson Desert is closest to the Southern Ocean, but even that is about 700 km away, to the south.
Patagonian Desert: 620,000 square km. Atacama Desert: 140,000 square km. Sechura Desert: 188,735 square km. In addition, there are two smaller deserts: The Monte Desert and the Guajira Desert for which I could not find the areas.
The Arabian Desert is 2,330,000 square km. or 900,000 square miles.
The Patagonian Desert is 620,000 square km or 200,000 square miles.
The Taklamakan Desert is 270,000 square km or 105,000 square miles.
The Great Sandy Desert is about 400,000 square km or 150,000 square miles.
The Great Victoria Desert at 647,000 square km (220,000 square miles) is the largest desert in Australia.
The Kalahari Desert has an area of about 900000 km², or 362500 square miles.Kalihari desert is 900,000 sq/km or 350,000 sq/miles big, located in Southern Africa.
Antarctica - 14,000,000 square km or 5,400,000 square miles.
The largest desert in Australia is the Great Victoria Desert, which covers around 348 750 sq km, and makes up 4.5% of Australia's total land area (according to Geoscience Australia). Estimates of its size vary from 348 750 sq km to 424 400 sq km.Together with the Great Sandy Desert, the Gibson Desert and many of the smaller deserts, it forms the Great Western Desert, the third largest in the world at 1.35 million sq km.Some of the other large deserts are the Gibson Desert, the Tanami Desert, the Great Sandy Desert, the Little Sandy Desert, Strzelecki, Sturt Stony Desert and the Simpson Desert.
The Sahara covers more than 9,000,000 square kilometers.