| File Extension: | FCHK |
| File Type Description: | Gaussian Checkpoint |
| File Type Developer: | Gaussian, Inc. |
| Primary Associated Software: | Gaussian |
| Primary Software Developer: | Gaussian, Inc. |
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The FCHK file extension is a Gaussian Checkpoint file developed originally by Gaussian, Inc. for Gaussian. Data from our web servers (annonymous users) show that FCHK files are most popular in United States and are often used by Windows 10. Google Chrome is their primary internet browser for the bulk of these users.
 | Gaussian by Gaussian, Inc. |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Linux |
 | Unix |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .G94 | Gaussian, Inc. | Data Files | Gaussian 94 Output Chemical Modeller Input File |
| .FCH | Gaussian, Inc. | Data Files | Gaussian Checkpoint File |
| .GJF | Gaussian, Inc. | Data Files | Gaussian Input Data File |
| .IPR | Flexera Software | Developer Files | InstallShield Project |
| .TAC | Parmerlee, Inc. | Data Files | ActiCalc Data File |
| .LPA | MP Filtri | Data Files | LPA View Laser Particle Analyser Data |
| .TMD | SoftMaker Software | Text Files | TextMaker Document |
| .DCT | Microsoft Corporation | Data Files | Dictionary File |
| .V01 | Genesis 2000, Inc | Data Files | Genesis 2000 File |
| .H14 | H&R Block | Data Files | H&R Block Canada 2014 Tax Return |
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