South Georgia and South Sandwich Islands is about 20 times smaller than South Carolina.

South Carolina is approximately 77,983 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 5.0% the size of South Carolina.
Tip: This to-scale comparison of South Carolina 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. South Carolina