Massachusetts is about 5 times bigger than South Georgia and South Sandwich Islands.

South Georgia and South Sandwich Islands is approximately 3,903 sq km, while Massachusetts is approximately 20,306 sq km, making Massachusetts 420% larger than South Georgia and South Sandwich Islands.
Tip: This to-scale comparison of South Georgia and South Sandwich Islands vs. Massachusetts uses the Mercator projection, which distorts the size of regions near the poles.

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