Iran is about 1.3 times bigger than Chad.

Chad is approximately 1,284,000 sq km, while Iran is approximately 1,648,195 sq km, making Iran 28% larger than Chad. Meanwhile, the population of Chad is ~18.0 million people (68.8 million more people live in Iran).
This to-scale comparison of Chad vs. Iran uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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