GSM Converter

Convert GSM files online for free

Select File
Drop or upload your .GSM file

Online File Converter

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How to convert your GSM file

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

Convert GSM to another file type

The converter easily converts your GSM file to various formats - free and online. No Media Player or extra software needed.

GSM to MP3
GSM to WAV
GSM to AAC
GSM to FLAC
GSM to OGG
GSM to WMA
GSM to AIFF
GSM to OPUS
GSM to WV

Convert a file to GSM

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

AAC to GSM
TTA to GSM
AU to GSM
WV to GSM
DTS to GSM
FLAC to GSM
MP3 to GSM
PCM to GSM
WAV to GSM

About GSM files

The .gsm extension is shared by two completely different formats: ArchiCAD Library Objects and GSM Audio files.

1. ArchiCAD Library Object (Most Common):
These are parametric 3D components used in Graphisoft ArchiCAD for Building Information Modeling (BIM). Unlike standard 3D files (like OBJ or FBX), a .gsm file is actually a container for GDL (Geometric Description Language) scripts.

The Problem: You cannot open these directly in SketchUp, AutoCAD, or Revit. They are strictly proprietary to the Graphisoft ecosystem. Because they are scripts (instructions on how to build the shape) rather than static geometry, standard 3D converters often fail to read them.
The Solution: To use these in other software, they must be opened in ArchiCAD and exported as IFC (for BIM interoperability), SKP (for SketchUp), or DWG (for CAD). If you do not have ArchiCAD, you cannot view the 3D geometry inside.

2. GSM Audio (Legacy Telephony):
This is a compressed audio format defined by the Global System for Mobile communications standard (GSM 06.10). It was designed for telephony usage in Europe and optimizes voice data for small file sizes.

The Problem: Modern media players like Windows Media Player or QuickTime often lack the specific codec to play these files natively. The audio quality is also limited to 8 kHz (telephone quality), making it unsuitable for music.
The Solution: For archiving or playback, these should be converted to MP3 or WAV. This makes the recordings accessible on all modern devices and web browsers.

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

Users also converted LCF, RFA, 3D, RECORD, GAM, TDE, GMS, FSM, PLA, IFC, MP3, PLN and HIF files.

FAQ

If you want to convert GSM file to M4A, ALAC or APE, you can use Graphisoft ArchiCAD or similar software from the "Architectural Library Object" category. In the File menu, look for Save As… or Export….

To convert MIDI, MID or RA files to GSM, try Graphisoft ArchiCAD or another comparable tool in the "Architectural Library Object" category.

The GSM 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 GSM converter.