GSM Won't Open? Convert to WAV Instantly
Fast, instant GSM to WAV conversion. No signup required. Just drop your .gsm file and get .wav in seconds.
Batch Settings
Vous avez des fichiers audio au format GSM et souhaitez les convertir en WAV pour une meilleure compatibilité ou une qualité sonore optimale ? Que ce soit pour archiver des enregistrements vocaux, les intégrer dans un montage professionnel ou simplement les rendre lisibles sur un éventail plus large de lecteurs, la conversion de GSM vers WAV est une étape courante. Le format GSM, souvent associé aux communications téléphoniques, est compact mais limite la fidélité audio. Le WAV, en revanche, est un conteneur audio non compressé, garantissant une reproduction fidèle du son original, idéal pour le post-traitement ou la diffusion. Notre outil vous accompagne dans cette démarche, assurant une transition fluide et sans perte de qualité perceptible, essentielle pour vos projets en France, en Belgique, en Suisse ou au Québec.
- Archivage d'entretiens pour la recherche universitaire
- Intégration de mémos vocaux dans des présentations d'entreprise
- Conversion de messages vocaux pour des preuves administratives
Dans les pays francophones, notamment pour les besoins légaux ou administratifs, la conversion en WAV est souvent privilégiée pour garantir l'intégrité et l'accessibilité à long terme des enregistrements audio.
About GSM to WAV Conversion
Dealing with a GSM file that won't open on your device? You're not alone — GSM compatibility issues are one of the most common reasons people search for a file converter. GSM is a widely used file format.
The fix is simple: convert your GSM to WAV. WAV is uncompressed PCM audio — studio quality with no data loss, but large file sizes. This conversion lets you convert between formats quickly, solving the problem in seconds rather than hours of troubleshooting.
Converting GSM to WAV maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert processes your GSM file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you When you need a WAV file.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert GSM to WAV
- 1
Add your GSM file
Drag and drop your .gsm file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick WAV output
Select .wav as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The audio engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .wav file. For batch jobs, download all at once as a zip.
What Happens When You Convert GSM to WAV
Your GSM file is decoded and re-encoded as WAV.
Your GSM file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in WAV format
The converted file is ready for download
Format Comparison
GSM
.gsm file
| Extension | .gsm |
| MIME Type | audio/gsm |
| Category | Audio |
WAV
.wav file
| Extension | .wav |
| MIME Type | audio/wav |
| Category | Audio |
Should You Convert GSM to WAV?
When to Convert
- ✓When you need a WAV file
Frequently Asked Questions
Why won't my GSM file open?
GSM files may not open if your device lacks the right codec or application. Converting to WAV — a more widely supported format — usually resolves this. WAV is uncompressed PCM audio — studio quality with no data loss, but large file sizes.
Is it safe to convert GSM to WAV online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting GSM to WAV?
Converting GSM to WAV maintains high quality with CocoConvert's optimised encoder settings. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my GSM file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert GSM to WAV on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.