Country size comparison
compared to
Vietnam is about 2.5 times smaller than Namibia.
Namibia is approximately 824,292 sq km, while Vietnam is approximately 331,210 sq km, making Vietnam 40.18% the size of Namibia. Meanwhile, the population of Namibia is ~2.7 million people (101.1 million more people live in Vietnam).
Compare further: Vietnam vs. Namibia