ER1 File

Did your computer fail to open an ER1 file? We explain what they are used for and recommend software that we know can open or otherwise handle your .ER1 files.

What is an ER1 file?

An .ER1 file is an AllFusion ERwin data file. Through our analysis of ER1 files, we know that one use of the format is AllFusion ERwin data. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension ER1

While we know of one file format using the .ER1 file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .ER1 file.

Various ER1 file openers, viewers, etc.

These apps are known to open certain types of ER1 files. Remember, different programs may use ER1 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

ERwinERwinUser submitted
PLATINUM ERwinPLATINUM ERwinUser submitted
We have not verified any software that we know for certain will work with ER1-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with ER1-files. If you know one, please use the 'Suggest a program' link below and tell us about it!