City size comparison

compared to

Hanoi is about 2.8 times bigger than Rio De Janeiro.

Rio De Janeiro is approximately 1,221 sq km, while Hanoi is approximately 3,360 sq km, making Hanoi 175% larger than Rio De Janeiro.
Tip: This to-scale comparison of Rio De Janeiro vs. Hanoi uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Hanoi vs. Rio De Janeiro

Flip Comparison · See true size
See Hanoi on top of Rio De Janeiro
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Cost of Living Comparison · 7 categories - 2026 data
Rio De Janeiro is 64.2% more expensive than Hanoi
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