Belarus is about 1.4 times bigger than Tajikistan.

Tajikistan is approximately 144,100 sq km, while Belarus is approximately 207,600 sq km, making Belarus 44% larger than Tajikistan. Meanwhile, the population of Tajikistan is ~10.8 million people (1.7 million fewer people live in Belarus).
Tip: This to-scale comparison of Tajikistan vs. Belarus uses the Mercator projection, which distorts the size of regions near the poles.
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