South Georgia and South Sandwich Islands is about 36 times smaller than Wisconsin.

Wisconsin is approximately 140,663 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 2.77% the size of Wisconsin.
Tip: This to-scale comparison of Wisconsin 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. Wisconsin