Saint Pierre and Miquelon is about 16 times smaller than South Georgia and South Sandwich Islands.

South Georgia and South Sandwich Islands is approximately 3,903 sq km, while Saint Pierre and Miquelon is approximately 242 sq km, making Saint Pierre and Miquelon 6.2% the size of South Georgia and South Sandwich Islands.
Tip: This to-scale comparison of South Georgia and South Sandwich Islands vs. Saint Pierre and Miquelon uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: Saint Pierre and Miquelon vs. South Georgia and South Sandwich Islands