South Georgia and South Sandwich Islands is about 6 times smaller than Belize.

Belize is approximately 22,966 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 16.99% the size of Belize.
Tip: This to-scale comparison of Belize 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. Belize