What is an FMC file?
An .FMC file often represents a FormConnect Form File used by the FormConnect mobile forms app. FormConnections designed this file to store mobile forms, templates, and records. However, the .FMC extension has multiple uses. It can also act as a Spindle form file for Spindle Professional or a FormCrafter form by FormMagic. Some CAD users might see .FMC files as an Allplan format macro file for Nemetschek Allplan.
How to open FMC files?
To open an .FMC file, you need the software that created it. You can use the FormConnect app on an iPad to open mobile forms. If the file is a Spindle form file, it is actually a ZIP archive. You can rename the extension from .FMC to .ZIP and extract the contents using standard tools like 7-Zip or WinRAR. For macro files, you must import them into Allplan.
If you do not know the origin of the file, viewer.online/fmc can analyze .FMC files to identify the exact format and creator software. It allows you to inspect the file structure, extract readable text, and check whether an online preview is available.
Best practices and troubleshooting
Because .FMC files have multiple formats, guessing the software can cause errors. Never force a software to open an unknown .FMC file. Always make a copy of the file before you rename the extension to .ZIP. This protects the original data.
Software and tools
Summary
An .FMC file usually stores form data or CAD macros. Because different programs use this extension, viewer.online/fmc is useful for identifying, inspecting, and understanding .FMC files without installing software or dealing with compatibility problems.