3DMDEF file format description

Many people often share .3dmdef files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .3dmdef files. To address this issue, we have created this page to offer assistance and guidance on handling .3dmdef files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .3dmdef files.

Our aim is to simplify the process and promote seamless use of the .3dmdef file format.

1 filename extension(s) found in our database.

.3dmdef - 3DMark Definitions Data

The 3DMDEF data files are related to 3D Mark. The 3DMDEF file is a 3DMark Definitions Data. 3DMark is a benchmark designed to measure the performance of computer hardware.

3D Mark
Data files
- / -
3DMark Definitions Data related extensions:
ZipForm Exported Data
Intuit TurboTax Canada 2012 Tax Return Data
Coach Activity File
Cashflow Manager v8 Backup File
Cliq Accessories Notepad Index
Alphacam Nest List

Naturally, other applications may also use the .3dmdef file extension. Even harmful programs can create .3dmdef files. Be especially cautious with .3dmdef files coming from an unknown source!

Can't open a .3dmdef file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems

At DataTypes.net, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by DataTypes.net:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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