South Georgia and South Sandwich Islands is about 45 times smaller than Uruguay.

Uruguay is approximately 176,215 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 2.21% the size of Uruguay.
Tip: This to-scale comparison of Uruguay 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. Uruguay