Extract text from Leica survey data files (GSI)
To convert GSI survey files to another format, you need Leica Geo Office or other GIS software.
To convert other file formats to the "Surveying Instrument Data File" file type, you need software like Leica Geo Office or a similar tool.
The .GSI file format is primarily a proprietary data output generated by Leica Geosystems surveying instruments, such as total stations and digital levels. It stores raw measurement data, point coordinates, and instrument parameters recorded in the field. Rarely, the .GSI extension is also used for Golden Software Interchange files, Italian fiscal ZIP archives by Passepartout S.p.A., or save files for the classic PC role-playing game Arcanum.
Users frequently encounter significant challenges when handling Leica .GSI files. Because it is a proprietary, fixed-block format, a .GSI file cannot be natively analyzed in standard spreadsheet applications or directly imported into most Computer-Aided Design (CAD) software. Without an expensive license for software like Leica Infinity or legacy tools like Leica Geo Office, the raw coordinate data remains locked or appears as unformatted, continuous text strings. The format relies on 8- or 16-character alphanumeric blocks that are incredibly difficult to parse manually.
To make the data usable, conversion is heavily recommended. For drafting and design workflows, convert the file to DXF to import survey points directly into AutoCAD or Civil 3D. For data analysis and spreadsheeting, convert it to CSV or TXT, which separates the coordinates into easily readable columns.
Convert.Guru analyzes your GSI file, detects the exact format, and lets you read the text inside.
Users also converted TXT, CSV, DXF, XLSX, IDX, GIS, DWG, PDF, ZIP, ASC, KML, XLS and JPG files.
If you want to convert GSI file to CSV, DXF, TXT, TEXT, SHP, KML, KMZ, GPX, GEOJSON, TOPOJSON, TIF or TIFF, you can use Leica Geo Office or similar software from the "Surveying measurement data storage" category. In the File menu, look for Save As… or Export….
To convert LAZ, KMZ, DTM, CSV, DEM, PRJ, LAS, GPX, DSM, SHP, DBF or KML files to GSI, try Leica Geo Office or another comparable tool in the "Surveying measurement data storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GSI converter.