This tool calculates the geodesic distance and both forward and backward azimuths between two locations on Earth using the WGS84 ellipsoid. Enter the latitude and longitude for each point (latitude must be between -90° and 90°, longitude between -180° and 180°). Use the interactive map to verify and adjust point positions for accuracy. Ideal for geospatial and geophysical use cases where precision is essential. Take into account that some browsers may not accept starting with a minus in number inputs when entering negative values in the input fields. For this reason, in case you need to add a negative coordinate first type the number and then add the minus sign in front. Use the interactive map to verify and adjust point positions for accuracy. Ideal for geospatial and geophysical use cases where precision is essential.