How to open G18 files
Did your computer fail to open a G18 file? We explain what G18 files are and recommend software that we know can open or convert your G18 files.
What is a G18 file?
The G18 file extension indicates to your device which app can open the file. However, different programs may use the G18 file type for different types of data.
While we do not yet describe the G18 file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.
We are continually working on adding more file type descriptions to the site, so if you have information about G18 files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!
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Generic G18
These apps are known to open certain types of G18 files. Since many different programs may use G18 files for different purposes, you may need to try a few of the apps to open your specific G18 file.
 | Altium Designer | User submitted |
 | Altium Designer Summer | User submitted |
 | Altium Designer Summer Viewer | User submitted |
 | Altium Designer Winter | User submitted |
 | Protel DXP | User submitted |
 | ALTIUM | User submitted |
 | AD13 | User submitted |
Try a universal file viewer
Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.