Convert MPEG-4 Audio (.m4a) to Android Audio (.android-audio) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .m4a file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
Android natively supports M4A (AAC and ALAC) playback since Android 3.1, so in many cases no conversion is needed. However, 'Android Audio' as a conversion target typically means optimizing the audio settings for the Android ecosystem — ensuring compatible bitrates, sample rates, and container formats that work reliably across Samsung, Google, OnePlus, Xiaomi, and hundreds of other Android device manufacturers. Some budget Android phones and older models may have incomplete M4A support.
While flagship Android phones handle M4A perfectly, budget devices with basic MediaCodec implementations may struggle with certain AAC profiles (HE-AAC v2, AAC-ELD) or ALAC inside M4A. Converting to standard AAC-LC at 44.1 kHz or MP3 at 320 kbps ensures universal Android compatibility. Additionally, Android's Bluetooth audio stack transcodes everything to SBC or AAC at fixed bitrates, so high-bitrate M4A provides no benefit over optimized Android Audio settings when using wireless headphones.
FFmpeg decodes the M4A audio (AAC or ALAC) and re-encodes to AAC-LC (the most universally supported Android codec) at 256 kbps VBR, or to MP3 at 320 kbps for maximum compatibility. Sample rate is set to 44.1 or 48 kHz. Output is wrapped in an M4A container for AAC or .mp3 for MP3. If the source M4A is already AAC-LC at a compatible bitrate, a stream copy avoids re-encoding.
If the source is 256 kbps AAC M4A and the output is also AAC-LC, stream copy preserves identical quality. Re-encoding from AAC to AAC (generation loss) is avoided when possible. If downgrading from ALAC to AAC, standard lossy compression applies — 256 kbps AAC is near-transparent for portable listening.
| Device | M4A | Android Audio |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
M4A to Android Audio conversion is about optimization and compatibility. Most modern Android phones handle M4A natively, but converting ensures reliable playback across the full range of Android hardware.
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HTTPS 加密上传
隐私优先
文件处理后自动删除
无需注册
即刻开始转换
随处可用
任何浏览器，任何设备
| No |
| 特性 | M4A | Android Audio |
|---|---|---|
| 全称 | MPEG-4 Audio | Android Compatible Audio |
| 扩展名 | .m4a | .m4a |
| 最适合 | Better than MP3 | Android optimized |