Research Tool · Distance Analysis
FEGEA CALCULATOR
Flat-Earth vs Globe-Earth — Geographic Distance Comparison
MODEL Azimuthal Equidistant (N-Pole)
GLOBE RADIUS 6,371.0 km
FORMULA Haversine + Law of Cosines
GLOBE
Spherical · Haversine
FLAT EARTH
Azimuthal Equidistant · N-Pole
▸ SELECT AN EXAMPLE OR ENTER COORDINATES AND CALCULATE
Globe: Haversine formula on sphere R=6371 km  ·  Flat: Azimuthal equidistant from North Pole, law of cosines ◆ Red = Points  ·  Gold = Midpoint