Convert M4A to WMA
Convert M4A files to WMA locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
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How to convert M4A to WMA
- Drop your .m4a files above, or click Upload Files. You can add many files at once.
- WMA is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .wma files as soon as each one finishes.
What to know about M4A to WMA conversion
- WMA is lossy, so files become much smaller than the M4A source. 192 kbps or higher is transparent for most listeners.
- You can choose the bitrate, sample rate and channels (mono, stereo or a 3D spatial effect).
M4A vs WMA
| Feature | M4A (MPEG-4 Audio) | WMA (Windows Media Audio) |
|---|---|---|
| Compression | lossy or lossless | lossy |
| Best for | iTunes, iPhone ringtones and podcasts | Windows Media Player libraries |
| Opens in | Apple devices, browsers and most media players | Windows Media Player, VLC, mpv and most media players |
M4A (MPEG-4 Audio): An audio-only file extension for MPEG-4 files, commonly encoded with AAC or ALAC codecs for high quality.
WMA (Windows Media Audio): A lossy audio codec and container developed by Microsoft for Windows Media Player.
Conversion options
- Bitrate from 96 to 320 kbps
- Sample rate: 22.05, 44.1 or 48 kHz
- Mono, stereo or 3D spatial audio
- Playback speed (0.5× to 2×)
Frequently asked questions
Is it safe to convert M4A to WMA here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several M4A files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert WMA to M4A.
Convert M4A to other formats
Convert other formats to WMA
- MP4 to WMA
- MP3 to WMA
- WAV to WMA
- MOV to WMA
- FLAC to WMA
- WEBM to WMA
- MKV to WMA
- AAC to WMA
- OGG to WMA
- OPUS to WMA
- AVI to WMA
- AIFF to WMA
See every M4A converter and WMA converter, or browse the full converter directory.