FAS File Type

- The quick facts

What are FAS files and how to open them

Are you having problems opening a FAS file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a FAS file?

A .FAS file is an AutoCAD Fast-load AutoLISP (FAS4) file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open FAS files

Important: Different programs may use files with the FAS file extension for different purposes, so unless you are sure which format your FAS file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different FAS openers which you will find listed below.

Last updated: May 27, 2022

Various apps that use files with this extension

These apps are known to open certain types of FAS files. Remember, different programs may use FAS files for different purposes, so you may need to try out a few of them to be able to open your specific file.

BioEditBioEditUser submitted
Molecular Evolutionary Genetics AnalysisMolecular Evolutionary Genetics AnalysisUser submitted
SnapGene ViewerSnapGene ViewerUser submitted
DnaSPDnaSPUser submitted
SnapGeneSnapGeneUser submitted
Unipro UGENEUnipro UGENEUser submitted
fplaunchfplaunchUser submitted
GENETYXGENETYXUser submitted
easescreen Crystal Screen-Managereasescreen Crystal Screen-ManagerUser submitted
Wondershare Photo Story PlatinumWondershare Photo Story PlatinumUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about FAS file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.