Croatia is about 7 times bigger than French Southern and Antarctic Lands.

French Southern and Antarctic Lands is approximately 7,829 sq km, while Croatia is approximately 56,594 sq km, making Croatia 623% larger than French Southern and Antarctic Lands.
Tip: This to-scale comparison of French Southern and Antarctic Lands vs. Croatia uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: Croatia vs. French Southern and Antarctic Lands