Click the "Select File" button above, and choose your GCD file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.
Convert GCD to another file type
The converter easily converts your GCD file to various formats - free and online. No AutoCAD or extra software needed.
Convert a file to GCD
The converter also works in reverse, so you can convert other Data formats to GCD with high quality output.
About GCD files
The .GCD extension covers three distinct file types, each requiring a different approach.
Shimadzu Chromatography Data: These are proprietary binary files generated by Shimadzu LabSolutions or GCsolution software containing raw scientific data from gas chromatographs.
The Problem: The format is locked to the specific instrument software and cannot be opened in Excel or standard text editors. Users often need to extract peak tables or chromatograms for analysis in R or Python.
The Solution: The official method is to use the LabSolutions "Export to ASCII" function to generate TXT or CSV files. For batch conversion without the original software, open-source tools like OpenChrom or the R package chromConverter can parse and convert these files to CSV or .mzXML.
Generic CADD Drawing: A legacy 2D CAD format from the 1990s (precursor to Visual CADD).
The Problem: Modern CAD tools like AutoCAD do not natively support .GCD files.
The Solution: You must use intermediate "bridge" software like Visual CADD or General CADD Pro to open the file and save it as a standard DXF or DWG, which can then be used in any modern architecture software.
Garmin Firmware Update: A system file (often named gupdate.gcd) used to update the operating system of Garmin GPS devices.
The Problem: Users often find this file on their device and try to open it. It is a binary container not meant to be viewed.
The Solution: Do not attempt to convert it. To apply the update, place the file in the \GARMIN folder of your device and restart it.
Use Convert.Guru to open and convert your GCD file.
If you want to convert GCD file to DWG, DXF, DGN, RVT, RFA, SKP, 3DM, STEP, IGES, SAT, X_T or X_B, you can use LabSolutions or similar software from the "Scientific Data & Firmware" category. In the File menu, look for Save As… or Export….
To convert SLDASM, DGN, PRT, IAM, X_B, CATPRODUCT, SLDPRT, RVT, ASM, DWG, CATPART or DXF files to GCD, try LabSolutions or another comparable tool in the "Scientific Data & Firmware" category.
The GCD 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 GCD converter.