GM Converter

Convert GM files online for free

Select File
Drop or upload your .GM file

Online File Converter

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How to convert your GM file

Click the "Select File" button above, and choose your GM file.
You'll see a preview.
Click the "Convert file to..." button to save your file in the format you want.

Convert GM to another file type

The converter easily converts your GM file to various formats - free and online. No Steam or extra software needed.

GM to MG
GM to LB
GM to EXE
GM to ISO
GM to BIN
GM to CUE
GM to PAK
GM to WAD
GM to PK3
GM to PK4
GM to BSP
GM to MAP

Convert a file to GM

The converter also works in reverse, so you can convert other Cad formats to GM with high quality output.

MOD to GM
BIN to GM
CFG to GM
SCX to GM
DAT to GM
MPQ to GM
LOG to GM
CUE to GM
INI to GM
EXE to GM
SCM to GM
ISO to GM

About GM files

The .gm file extension is a "chameleon" format used for vastly different purposes, making it difficult to open without knowing its origin. Its most common use (35%) is as a G-code file generated by SheetCam or Torchmate controllers, containing plain-text coordinate instructions for CNC machines (plasma cutters, routers). However, the file is also widely used in gaming (38% combined) as either a proprietary 3D model for the Akella STORM Engine (found in games like Sea Dogs and Pirates of the Caribbean) or as an addon file for Garry's Mod.

Users often have trouble because a .gm file meant for a CNC machine looks like gibberish to a game engine, and vice versa.

Best Conversion Targets:

For CNC/Machining: Since these are text-based, convert/rename to TXT to view the code, or NC / TAP for broader machine compatibility.
For 3D Modeling: Akella .gm files are binary meshes. They must be converted to OBJ or FBX using specialized tools like GM Viewer or legacy Autodesk Maya plugins to be editable in modern software like Blender.
For Gaming: If from Garry's Mod, the file may be a compressed archive. converting (renaming) it to ZIP or GMA often allows extraction of the internal assets.

Use Convert.Guru to open and convert your GM file.

Users also converted GM1, GBR, GMA, ZIP, GCODE, TAP, ATP, GPX, MG and LB files.

The GM Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GM converter.