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WMA to GSM - Online Audio Converter
Convert WMA to GSM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert WMA to GSM
Drop WMA audio here or click to select
WMA
GSM (GSM)
About WMA to GSM
Convert WMA to GSM. WMA is Microsoft's audio codec paired with Windows Media workflows. GSM 06.10 encodes European mobile speech at 13 kbps. Carrier framing can offset timing; verify duration..
Why convert WMA to GSM?
- Smaller files with GSM lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
WMA vs GSM
| Codec | WMA v2 | GSM |
|---|---|---|
| Compression | lossy | lossy |
| Sample behavior | Quality set by bitrate | Quality set by bitrate |
| Typical use | WMA is Microsoft's audio codec paired with Windows Media workflows. | GSM 06.10 encodes European mobile speech at 13 kbps. |
When not to convert WMA to GSM
- Skip GSM for archival masters: lossy compression discards detail, so keep the WMA original.
- Keep a master copy: repeated exports stack small losses, so archive WMA before batch GSM shares.
Limits
Starting point: WMA - WMA is Microsoft's audio codec paired with Windows Media workflows. Copy-protected store files cannot be converted; use DRM-free sources. Carrier framing can offset timing; verify duration. Encode GSM (GSM) from WMA at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert WMA to GSM?
Drop your WMA file onto this page, choose quality and codec settings, then click Convert. The result downloads as GSM instantly. All processing runs in your browser.
What codec is used for GSM?
The default codec for GSM is GSM. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.