Extract text from Gravity field models or flowcharts (GFC)
To convert GFC files to another format, you need Generic Mapping Tools or other Data software.
To convert other file formats to the "Gravity Field Coefficients" file type, you need software like Generic Mapping Tools or a similar tool.
The .GFC file extension most commonly denotes a Gravity Field Model data file. Established by the International Centre for Global Earth Models (ICGEM), these files store spherical harmonic coefficients representing Earth's gravitational field. They are generated by satellite missions like GRACE and GRACE-FO. Less commonly, .GFC files are FlowCharter diagram files created by the defunct Patton & Patton Software, or game asset caches for Doom 3.
The main disadvantage of the .GFC format is its highly specialized structure. Standard GIS software like QGIS cannot read ICGEM spherical harmonic coefficients directly without specialized plugins or prior data synthesis. The files are large text arrays that are useless to general users. The FlowCharter variant is obsolete, requiring legacy software running on old versions of Windows to open natively, trapping user diagrams in an inaccessible proprietary format.
For scientific mapping, convert .GFC to a standard grid format like NC (NetCDF) or GRD. To analyze the raw coefficients, convert it to CSV or TXT. If you possess an old FlowCharter diagram, convert it to PDF for archiving, or VSDX for modern editing.
Convert.Guru analyzes your GFC file, detects the exact format, and lets you read the text inside.
Users also converted CFG, GPX, RSF and FMA files.
If you want to convert GFC file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Generic Mapping Tools or similar software from the "Gravity Field Model Data" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to GFC, try Generic Mapping Tools or another comparable tool in the "Gravity Field Model Data" 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 GFC converter.