Vietnam is 2.3 times larger than Nepal.
Area: 147,181 km2 World Factbook
Population: 30,986,975 (July 2014) World Factbook
Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked sovereign nation located in South Asia. With an area of 147,181 square kilometres and a population of approximately 27 million, Nepal is the world's 93rd largest country by land mass and the 41st most populous country. Wikipedia
Area: 331,210 km2 World Factbook
Population: 93,421,835 (July 2014) World Factbook
Vietnam, officially the Socialist Republic of Vietnam, is the easternmost country on the Indochina Peninsula in Southeast Asia. With an estimated 90.0 million inhabitants as of 2013, it is the world's 13th-most-populous country, and the eighth-most-populous Asian country. Wikipedia