NI Multisim 12 circuit design
File type: 3d graphics, CAD-CAM-CAE file
An .ms12 file is a circuit design created with NI Multisim 12.
It belongs to the Windows version of NI Multisim, an electronic circuit design and SPICE simulation application.
File type category:
3d graphics, CAD-CAM-CAE file
Date updated: October 27, 2026
The .ms12 file extension is associated with NI Multisim, a SPICE-based circuit design and simulation environment for Microsoft Windows developed by National Instruments.
An .ms12 file stores a circuit design made with Multisim version 12. The design can include the schematic, component information and connections needed to continue editing or simulate the circuit in Multisim.
This is a native, version-specific Multisim design format rather than a general-purpose interchange format. Newer versions of Multisim may open files created by version 12, but compatibility can depend on the design and the Multisim version used.
Open the .ms12 file in NI Multisim on Microsoft Windows. Multisim version 12 or a later version should be used to open and edit the design.
If the file does not open in a newer version, try opening it with Multisim 12 or ask the sender to save or export the design in a format supported by the installed version.
Open the native .ms12 file in NI Multisim and use its save or export functions.
Multisim can export circuit information such as a SPICE netlist for use in compatible simulation software, but a netlist does not preserve every schematic or design-editing feature in the original file.
Software applications that can open ms12 files:
Microsoft Windows
Software applications that can edit ms12 files:
Microsoft Windows
Software capable of saving ms12 files:
Microsoft Windows
Software apps that create ms12 files:
Microsoft Windows
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