City size comparison

compared to

Tehran is about 4.9 times smaller than Hanoi.

Hanoi is approximately 3,360 sq km, while Tehran is approximately 686 sq km, making Tehran 20.42% the size of Hanoi.
Tip: This to-scale comparison of Hanoi vs. Tehran uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Tehran vs. Hanoi

Flip Comparison · See true size
See Tehran on top of Hanoi
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Cost of Living Comparison · 7 categories - 2026 data
Hanoi is 52.5% more expensive than Tehran
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