Click the "Select File" button above, and choose your GSB file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert GSB to another file type
To convert GSB files to another format, you need ArcGIS Pro or other GIS software.
Convert a file to GSB
To convert other file formats to the "Coordinate Transformation File" file type, you need software like ArcGIS Pro or a similar tool.
About GSB files
The .GSB file format primarily functions as a Geodetic grid shift file utilizing the NTv2 (National Transformation version 2) coordinate transformation standard. It is heavily utilized by GIS professionals to map and convert spatial coordinates accurately. A secondary, yet common, use for .GSB files is storing personal accounting data in an XML-based structure for the Grisbi financial management software.
To interact with the geodetic variant, professionals typically rely on ArcGIS Pro developed by Esri or open-source alternatives like QGIS. The financial variant requires the original Grisbi application to render the ledgers correctly.
Users frequently encounter limits with .GSB files because they are highly specialized. The NTv2 geodetic grid files are compiled in a strict binary format, rendering them completely unreadable without dedicated spatial software. This creates data lock-in when you need to share coordinate shift parameters with legacy systems that only accept ASCII text. Conversely, while Grisbi accounting files are built on XML, they utilize a proprietary schema. You cannot simply import them into mainstream accounting tools like QuickBooks or Excel without throwing errors.
If you are working with an NTv2 .GSB file, converting it to an ASCII grid format like ASC or TXT is recommended to make the grid parameters human-readable, though this will significantly increase the overall file size. For Grisbi users, exporting the .GSB file to CSV or QIF is the most reliable way to migrate financial data, although some custom transaction metadata may be lost during the translation.
Because the primary NTv2 .GSB format is a highly specific closed binary grid, it is notoriously difficult to open or convert outside of dedicated GIS environments. Standard online converters routinely fail to process it. Our platform inspects the file, and if it detects the underlying XML structure of a Grisbi document or another embedded format, viewing or extracting the text data may still be possible.
Convert.Guru analyzes your GSB file, detects the exact format, and lets you read the text inside.
If you want to convert GSB file to SHP, KML, KMZ, GPX, GEOJSON, TOPOJSON, TIF, TIFF, ECW, SID, IMG or DEM, you can use ArcGIS Pro or similar software from the "Geodetic Grid Shift 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 GSB, try ArcGIS Pro or another comparable tool in the "Geodetic Grid Shift Storage" category.
The GSB Converter Story
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 GSB converter.