how to calculate distance between two location on Flutter?(result should be meters)

Issue

How to calculate distance between two location in dart?

Solution

Without using plugin

  double calculateDistance(lat1, lon1, lat2, lon2){
    var p = 0.017453292519943295;
    var c = cos;
    var a = 0.5 - c((lat2 - lat1) * p)/2 +
        c(lat1 * p) * c(lat2 * p) *
            (1 - c((lon2 - lon1) * p))/2;
    return 12742 * asin(sqrt(a));
  }

result is KM. if you want meter just multiply by 1000. return 1000 * 12742 * asin(sqrt(a))

Answered By - BIS Tech