South Georgia and South Sandwich Islands is about 17 times smaller than Lithuania.

Lithuania is approximately 65,300 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 5.98% the size of Lithuania.
Tip: This to-scale comparison of Lithuania 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. Lithuania