South Georgia and South Sandwich Islands is about 211 times smaller than Namibia.

Namibia is approximately 824,292 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 0.47% the size of Namibia.
Tip: This to-scale comparison of Namibia vs. South Georgia and South Sandwich Islands uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: South Georgia and South Sandwich Islands vs. Namibia