Myanmar is 79% 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: 676,578 km2 World Factbook
Population: 55,746,253 (July 2014) World Factbook
Burma, officially the Republic of the Union of Myanmar, commonly shortened to Myanmar, is a sovereign state in Southeast Asia bordered by Laos, Thailand, China, Bangladesh, and India. Wikipedia