FAQ
GGF to CAL Conversion
What are GGF files?
GGF is the Trimble Grid File, a binary format that stores a geoid model as a regular grid of values. Geoid heights describe the separation between the reference ellipsoid used by GNSS receivers and mean sea level, so a GGF file lets Trimble field and office software convert ellipsoidal heights from satellite measurements into elevations above sea level. Each file represents one geoid model, such as a national or regional model, and the right file is chosen according to the geoid defined in the project's coordinate system. Files can be large, and Trimble Business Center offers to cut a smaller sub-grid for the survey area before sending a file to a field device.
What are CAL files?
A CAL image file represents a monochrome bitmap image that uses the CALS raster image standard for storing graphics data. This standard was created in the 1980s by the US Department of Defence as a compressed interchangeable image format. CAL and CALS are extensions used for similar purposes.
Can reaConverter convert GGF to CAL?
Yes! reaConverter instantly converts .ggf to .cal with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert GGF files directly from Windows Explorer using the right-click menu — fast and convenient.
What is reaConverter used for?
reaConverter is a Windows converter for 800+ formats, GIS data among them. For GGF to CAL it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.
Why choose offline conversion with reaConverter?
reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.
Can I convert GGF to CAL online?
If you only need to convert a few GGF files to CAL format, feel free to try our free online free online GGF to CAL converter — perfect for small batches with no installation needed!
How can I turn GGF files into CAL on my computer?
The best way to change GGFs to CALs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from GGF to CAL.
How can I automate GGF to CAL files conversion?
reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.
Is there a way to convert GGF files to CAL using the command prompt?
reaConverter provides full access to all its features via Windows command line, including a high-performance command-line ggf to cal converter for batch processing.
What else can I do with reaConverter?
Convert DICOM imagesCrop photoConvert RAW photo formatsConvert GIS filesConvert PDF
Related conversions
Other ways to convert GGF files, and other sources that convert to CAL.
