South Georgia and South Sandwich Islands is about 46 times smaller than Oklahoma.

Oklahoma is approximately 177,847 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 2.19% the size of Oklahoma.
Tip: This to-scale comparison of Oklahoma 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. Oklahoma