Northern Territory is about 7 times smaller than Sahara Desert.

Sahara Desert is approximately 9,200,000 km² (3,552,138 sq mi), while Northern Territory is approximately 1,347,791 km² (520,385 sq mi), making Northern Territory 14.65% the size of Sahara Desert.
Tip: This to-scale comparison of Sahara Desert vs. Northern Territory uses the Mercator projection, which distorts the size of regions near the poles.
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