Vietnam is about 5 times smaller than Iran.

Iran is approximately 1,648,195 sq km, while Vietnam is approximately 331,210 sq km, making Vietnam 20.1% the size of Iran. Meanwhile, the population of Iran is ~86.8 million people (17.1 million more people live in Vietnam).
This to-scale comparison of Iran vs. Vietnam uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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