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

South Georgia and South Sandwich Islands is approximately 3,903 sq km, while South Carolina is approximately 77,983 sq km, making South Carolina 1,898% larger than South Georgia and South Sandwich Islands.
Tip: This to-scale comparison of South Georgia and South Sandwich Islands vs. South Carolina uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: South Carolina vs. South Georgia and South Sandwich Islands