How to open LUM files
Did your computer fail to open a LUM file? We explain what LUM files are and recommend software that we know can open or convert your LUM files.
What is a LUM file?
The LUM file extension indicates to your device which app can open the file. However, different programs may use the LUM file type for different types of data.
While we do not yet describe the LUM 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 LUM 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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Various LUM openers
These apps are known to open certain types of LUM files. Since many different programs may use LUM files for different purposes, you may need to try a few of the apps to open your specific LUM file.
 | Product Explorer | User submitted |
 | TeraPad | 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.
Not sure exactly what type of file you are trying to open? Try our new File Analyzer. It is a free tool that can identify more than 11,000 different kinds of files - most likely yours too! It will help you find software that can handle your specific type of file. Download File Analyzer here.