South Georgia and South Sandwich Islands is about 8 times smaller than Armenia.

Armenia is approximately 29,743 sq km, while South Georgia and South Sandwich Islands is approximately 3,903 sq km, making South Georgia and South Sandwich Islands 13.12% the size of Armenia.
Tip: This to-scale comparison of Armenia 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. Armenia