Belize is 3,968 times larger than San Juan, Metro Manila.
Area: 22,966 km2 World Factbook
Population: 340,844 (July 2014) World Factbook
Belize is a country on the northeastern coast of Central America. It is the only country in the area that has English as its official language; Belizean Creole and Spanish are also commonly spoken. Wikipedia
Area: 6 km2 calculated
San Juan is a city in the Philippines. It is one of the cities that comprises Metro Manila, the National Capital Region of the Philippines. It is the smallest city in the country in terms of land area. Wikipedia