Mexico is about 251 times bigger than French Southern and Antarctic Lands.

French Southern and Antarctic Lands is approximately 7,829 sq km, while Mexico is approximately 1,964,375 sq km, making Mexico 24,991% larger than French Southern and Antarctic Lands.
Tip: This to-scale comparison of French Southern and Antarctic Lands vs. Mexico uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: Mexico vs. French Southern and Antarctic Lands