Geography & GPS

14 free geography & gps tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads.

Calculate XY coordinates for equally spaced bolt-circle holes

Convert true, magnetic, and compass bearings using the TVMDC method

Calculate great-circle distance, initial track, and waypoints between airports

Calculate sea distance between two ports by rhumb-line and great-circle methods

Find the straight-line distance between two points in three-dimensional space.

Calculate the great-circle distance between any two points on Earth.

Convert coordinates between DD, DDM, DMS, radians and UTM — plus great-circle distance and bearing.

Find the compass bearing and great-circle distance between any two points on Earth.

Find the true bearing and great-circle distance between any two points on Earth.

Great-circle distance, bearing and midpoint between two GPS coordinates.

Convert GPS coordinates between DD, DDM, DMS, UTM, Geohash, Plus Code, Maidenhead and MGRS instantly.

Compute the shortest path between any two points on Earth — with bearings, midpoint, and Vincenty precision.

Convert map distances to real-world distances — and find any unknown in the scale equation.

Convert between UTM grid references and latitude/longitude in both directions.