France (Metropolitan) is 46% larger than Japan.
Area: 377,915 km2 World Factbook
Population: 127,103,388 (July 2014) World Factbook
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south. Wikipedia
Area: 549,970 km2 World Factbook
Population: 64,036,000 (June 2014) INSEE
Metropolitan France is the part of France located in Europe. It includes mainland and the nearby islands in the Atlantic Ocean, the English Channel and the Mediterranean Sea, including Corsica. Wikipedia