Northern Territory is about 1.5 times smaller than Nunavut.

Nunavut is approximately 2,038,722 km² (787,155 sq mi), while Northern Territory is approximately 1,347,791 km² (520,385 sq mi), making Northern Territory 66.11% the size of Nunavut.
Tip: This to-scale comparison of Nunavut vs. Northern Territory uses the Mercator projection, which distorts the size of regions near the poles.
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