TopoXY: Stereo 70 si GPS

TopoXY turns your phone into a pocket surveying tool. Instantly convert coordinates between Stereo 70 (EPSG:3844) and GPS (WGS84), measure distances, orientations and areas, and analyze terrain slope directly on the map.

PRECISION CONVERSION
• Stereo 70 to WGS84 with centimeter precision, aligned with PROJ and QGIS
• Support for Poland (PUWG 1992 and 2000), Czech Republic and Slovakia (S-JTSK), Italy (Gauss-Boaga) and Germany (ETRS89 / UTM)
• Bulk import from CSV or TXT files
• Correct formatting of coordinates for each country

FIELD MEASUREMENT
• Distance and orientation (azimuth plus cardinal point) between points
• Area and perimeter for polygons from multiple points
• Add points manually or from current GPS position

MAP AND TERRAIN
• Standard map and high-resolution satellite images
• Slope analysis between two points, with automatically filled altitude
• Navigate to any point with Google Maps or Waze

INTENDED FOR SURVEYS
• Works without an account: open the application and work
• Interface in Romanian, English, Polish, Czech, Slovak, Italian and German
• Same results as the TopoXY app on iOS

TopoXY Pro subscription unlocks advanced measurements, extended map, terrain analysis and removes ads.

Note: TopoXY is an assistance tool. For official cadastral work, verify results with authorized equipment.