Audio Conversion
Convert ALAC to MP3 Online — Free
Fast, free ALAC to MP3 converter. No registration required.
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200万以上のファイル変換
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処理後にファイルを自動削除
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すぐに変換を開始
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変換方法
1
Upload your .m4a file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .mp3 file when it's ready.
ALACとは？
ALAC is Apple's lossless audio format. It provides CD-quality audio with smaller file sizes than WAV or AIFF, and is fully supported in iTunes and Apple devices.
形式の詳細
- 正式名称
- Apple Lossless Audio Codec
- 拡張子
- .m4a
主な特徴
- Lossless
- Apple native
- iTunes compatible
- CD quality
MP3とは？
MP3 is the most popular audio format worldwide. It uses lossy compression to reduce file size while maintaining acceptable audio quality for most listeners.
形式の詳細
- 正式名称
- MPEG Audio Layer III
- 拡張子
- .mp3
主な特徴
- Universal compatibility
- Small file sizes
- Streaming support
- ID3 tag support
ALACとMP3の比較
| 特徴 | ALAC | MP3 |
|---|---|---|
| 正式名称 | Apple Lossless Audio Codec | MPEG Audio Layer III |
| 拡張子 | .m4a | .mp3 |
| 最適な用途 | Lossless | Universal compatibility |
よくある質問
Converting between lossless formats preserves perfect quality. When converting to lossy formats, our optimized encoding minimizes any audible difference. You can adjust bitrate to control quality vs. file size.
We preserve ID3 tags, album art, and metadata when both ALAC and MP3 support them. Some metadata may not transfer between incompatible formats.
Pro users can batch convert multiple audio files simultaneously. Free users convert one file at a time with up to 5 free conversions per day.
We support all standard sample rates from 8kHz (voice) up to 192kHz (studio quality). The default preserves your source file's sample rate.
Yes. Our audio converter handles music, podcasts, voice memos, and audiobook files. For podcasts, we recommend MP3 at 128-192kbps for the best balance of quality and file size.