City size comparison

compared to

Ottawa is about 4 times bigger than Tehran.

Tehran is approximately 686 sq km, while Ottawa is approximately 2,779 sq km, making Ottawa 305% larger than Tehran.
Tip: This to-scale comparison of Tehran vs. Ottawa uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Ottawa vs. Tehran

Flip Comparison · See true size
See Ottawa on top of Tehran
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Cost of Living Comparison · 7 categories - 2026 data
Tehran is 74.7% cheaper than Ottawa
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