| English | eng-000 |
| Gaussian Checkpoint File | |
| filename extensions | art-335 | fch |
| filename extensions | art-335 | fchk |
| TechTarget file types | art-336 | FCH-Gaussian-Checkpoint-File-CambridgeSoft-Corporation |
| TechTarget file types | art-336 | FCHK-Gaussian-Checkpoint-File-CambridgeSoft-Corporation |