Convert Shimadzu GC .gcd and GC-MS .qgd files to CSV (Beta)

Get the detector signals, GC traces and peak tables of GCsolution .gcd files and every scan of GCMSsolution .qgd files as CSV and Excel.

Opens: CH, UV, MS, .D (ZIP), DX, LCD, GCD, QGD, .raw (ZIP), CDF
Saves: CSV, XLSX

Convert

Chromatography data

Choose files… or drop them here

up to 200 MB each, 50 files max

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Agilent .ch, .uv or .ms files or a .D folder packed as .zip (ChemStation, OpenLab or MassHunter), an OpenLab CDS .dx file, Shimadzu .lcd, .gcd or .qgd files, a Waters .raw folder packed as .zip, or AIA / ANDI .cdf files. Several files or runs are converted together.

Options

Number format

Pick the comma version if your Excel uses a decimal comma (most of Europe).

DAD / PDA wavelengths (nm)

Chromatograms to extract from diode-array spectra, e.g. 254, 280. Empty: the wavelengths of the file's own signals, else 210, 230, 254 and 280 nm.

More options

Bandwidth for chosen wavelengths (nm)

Absorbance is averaged over wavelength ± half this width, like a DAD signal setting “Sig=254,4”. 0 takes the nearest stored wavelength.

Your files are deleted after processing.

Tell us how this tool could be better

Shimadzu GC systems save every injection as a .gcd file (GCsolution and LabSolutions GC), and GC-MS systems as a .qgd file (GCMSsolution). Both are compound documents that only Shimadzu's own software opens, and their text export has to be run file by file on the instrument PC. This page reads them directly.

How to convert .gcd and .qgd files

Upload one or more .gcd or .qgd files, or a ZIP of a whole folder of them.
Choose the number format: decimal point with commas between columns, or decimal comma with semicolons for Excel in most European languages.
Download the CSV files or the Excel workbook with a chart per signal.

What you get from a .gcd file

Detector signals such as a flame ionization detector, as a CSV with retention time in minutes and the response in µV, with the channel name such as DET#1 (SFID1). The values are the stored numbers themselves; GC files keep them as plain floating-point values.
Peak tables as GCsolution stored them: R.Time, start and end, area, height, A/H, mark, ID and compound name, concentration, plates, tailing and resolution.
GC traces where the file logs them: column oven and injector temperature, carrier gas pressure and flow, column flow and linear velocity.
Sample information: sample name and ID, operator, vial, injection volume, acquisition time, method, batch file, instrument and software version.

What you get from a .qgd file

The total ion chromatogram as GCMSsolution stored it, with the base peak of every scan.
Every scan as a long table of scan number, time, m/z and intensity, ready for a pivot table or a script.
Sample information: sample name and ID, operator, data file, method and tuning file paths, acquisition time and GCMSsolution version.

How the numbers were checked

A GCsolution ASCII export of a GC-2014 run matches all 66,255 chromatogram points and every cell of its 83-peak table. In .qgd files GCMSsolution stores the TIC separately from the scans; for every scan of the files we tested, the intensities we read add up to exactly that TIC, and the strongest ions of a dichloromethane blank come out at m/z 49, 84 and 86 as they should.

Good to know

Texts written on Chinese Windows (sample type, folder names) may show as garbled characters; the data is not affected.
For LC files of LabSolutions see Convert Shimadzu LabSolutions .lcd files to CSV.

More about what this tool reads and writes: Chromatography Data Converter (Agilent, Shimadzu, Waters, AIA).