# 5.8.1.5. eqcorrscan.utils.mag_calc.dist_calc

`eqcorrscan.utils.mag_calc.``dist_calc`(loc1, loc2)

  Function to calculate the distance in km between two points.

  Uses the flat Earth approximation. Better things are available for this, like gdal.

  Parameters: | loc1 (tuple) Tuple of lat, lon, depth (in decimal degrees and km) loc2 (tuple) Tuple of lat, lon, depth (in decimal degrees and km)
  Returns: | Distance between points in km.
  Return type: | float