SurveyStar Transform

SurveyStar Transform is an offline-first coordinate transformation tool built for surveyors, GIS professionals, and field engineers who need reliable results without a signal. WORLDWIDE CRS SUPPORT Powered by PROJ 9.8.1, running natively on-device — the same open-source geodesy engine trusted by GIS software worldwide. Search the full EPSG coordinate reference system database and transform between any two systems, entirely offline. SURVEY-GRADE ACCURACY, TRANSPARENTLY SHOWN Every transformation reports exactly which operation was used and its stated accuracy — down to centimeters where a national survey grid applies, or a clear warning when only an approximate ("ballpark") shift is available. No silent guessing. High-accuracy datum grids are bundled directly in the app for: United States (NADCON5, covering CONUS, Alaska, and Hawaii), Canada, United Kingdom, Ireland, Netherlands, France, Germany, Austria, Portugal, Finland, and Slovakia — with additional country-specific transformations covering most of Europe and South/Central America. FLEXIBLE INPUT Enter coordinates in decimal degrees or DMS (degrees/minutes/seconds), for geographic or projected systems. Swap source and target, or reverse a transformation, in one tap. CUSTOM COORDINATE SYSTEMS Define your own transverse Mercator system on an existing datum when you need a local or unregistered CRS that isn't in the standard EPSG catalog. BUILT FOR THE FIELD No network connection needed for any transformation — the entire PROJ database and grid set ship with the app, so it works the same in the office or deep in the field. SurveyStar Transform is under active development. Coming soon: saved point management, batch/file transformation, and additional survey tools.

SurveyStar Transform — Initial Release Transform coordinates between any two coordinate systems worldwide, offline, powered by the industry-standard PROJ library. • Global CRS support, incl. survey-grade US State Plane (NAD27/NAD83) • Transform single points or batch CSV/Excel files • Save & manage points in My Points • On-demand geoid grids for accurate height conversion • Built-in examples & in-app Quick Guide Built for surveyors, engineers, and GIS pros.