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WMA to ALAC (M4A) - Online Audio Converter
Convert WMA to ALAC (M4A) online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert WMA to ALAC (M4A)
Drop WMA audio here or click to select
WMA
ALAC (M4A) (ALAC)
About WMA to ALAC (M4A)
Convert WMA to ALAC (M4A). WMA is Microsoft's audio codec paired with Windows Media workflows. ALAC is Apple's lossless codec stored inside M4A files. Stays bit-identical to WAV while tagging like AAC..
Why convert WMA to ALAC (M4A)?
- Larger files than lossy shares with ALAC (M4A) lossless quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
WMA vs ALAC (M4A)
| Codec | WMA v2 | ALAC |
|---|---|---|
| Compression | lossy | lossless |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | WMA is Microsoft's audio codec paired with Windows Media workflows. | ALAC is Apple's lossless codec stored inside M4A files. |
When not to convert WMA to ALAC (M4A)
- Skip ALAC (M4A) for the smallest share: lossless output stays large, so prefer a lossy target when sending WMA files.
- Keep a master copy: repeated exports stack small losses, so archive WMA before batch ALAC (M4A) 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. Stays bit-identical to WAV while tagging like AAC. Encode ALAC (M4A) (ALAC) 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.
Related conversions
FAQ
How do I convert WMA to ALAC (M4A)?
Drop your WMA file onto this page, choose quality and codec settings, then click Convert. The result downloads as ALAC (M4A) instantly. All processing runs in your browser.
What codec is used for ALAC (M4A)?
The default codec for ALAC (M4A) is ALAC. 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.