I believe the following programs have paths that can convert IFC files into IDF files:

• OpenStudio
• Simergy
• Space Boundary Tool

It is possible that other applications can do this also. If so, please add a comment to this answer and I will add them.

I believe the following programs both OpenStudio and Simergy have paths that can convert IFC files into IDF files:

• OpenStudio
• Simergy
• Space Boundary Tool

files. It is possible that other applications can do this also. If so, please add a comment to this answer and I will add them.

I believe both OpenStudio and Simergy have paths that can convert IFC files into IDF files. It is possible that other applications can do this also. If so, please add a comment to this answer and I will add them.

I believe both OpenStudio OpenStudio and Simergy Simergy have paths that can convert IFC files into IDF files.