Champhai (Pron:/tʃamˈpʰaɪ/) is a border town in Mizoram state, in far eastern India. It is the headquarters of Champhai district, one of the eleven districts in the state. It is located on the Indo-Myanmar border and is situated in a strategically important location. Because of this, it is the main business corridor for India and Myanmar in the area. The area of Champhai is 3,185.83 square kilometres (1,230 sq mi). The average annual rainfall is 1,814 millimetres (71.4 in).