Great circle distance formula關於「Wgs84 distance formula」標籤，搜尋引擎有相關的訊息討論：
Calculate distance between two latitude-longitude points?Note that you cannot apply a Haversine formula on an ellipsoid of revolution like WGS 84. You can only apply this method on a sphere with a ...Getting distance between two points based on latitude/longitudeIs the Haversin