Louisiana is about 29 times bigger than South Georgia and South Sandwich Islands.

South Georgia and South Sandwich Islands is approximately 3,903 sq km, while Louisiana is approximately 112,825 sq km, making Louisiana 2,791% larger than South Georgia and South Sandwich Islands.
Tip: This to-scale comparison of South Georgia and South Sandwich Islands vs. Louisiana uses the Mercator projection, which distorts the size of regions near the poles.

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