CoordCalc

1. Download and open the app, then grant location and file permissions. Optionally download offline map tiles for field use. 2. Convert coordinates: tap Convert, paste or enter coordinates or pick a point on the map, choose the target system (WGS84, UTM, MGRS), then copy or share the result. 3. Measure and plan: select Measure, tap two or more points to get distance, bearing, or area on the map, and save the result as a route. 4. Manage waypoints: tap Add to create a waypoint from GPS or manual input, organize them into lists, and export or import GPX, KML, or CSV. 5. Customize settings: choose units, datum, grid display, and enable batch conversion to match your workflow and surveying needs.