South Georgia and South Sandwich Islands is about 7 times smaller than Burundi.

Burundi is approximately 27,830 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 14.02% the size of Burundi.
Tip: This to-scale comparison of Burundi 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. Burundi