M4A 轉 WAV轉換工具
A free M4A to WAV converter for MPEG-4 Audio files. Browser-based pairs here usually run in this tab, with no file upload.
把你的 M4A 檔案拖曳到這裡
or 瀏覽你的裝置 · 貼上快捷鍵 Ctrl+V
Accepts .m4a files. You can queue several files; each is processed one after another on your own device.
你的檔案不會離開這台裝置——沒有上傳，也沒有伺服器可以刪除它們。
- 01
新增你的 M4A 檔案
把檔案拖放到上方的方框，或點擊以瀏覽選取。檔案會直接從磁碟讀取——不會傳送到任何地方。
- 02
檢查設定
WAV is already selected. Open the gear icon on any row if you want to change quality, dimensions or codec before converting.
- 03
下載你的 WAV
按下轉換，等待該列完成即可。若轉換多個檔案，可以將它們一起打包成單一 ZIP 檔下載。
M4A
MPEG-4 Audio只包含音訊的 MP4 容器格式，通常是 AAC，有時則是無損的 ALAC。這是 iTunes 轉錄音樂時使用的格式，也是 Apple 裝置預期的格式，並妥善支援封面圖片與標籤資訊。
- 開發者
- Apple / MPEG
- 發布年份
- 2001
- 副檔名
- .m4a
- MIME 類型
- audio/mp4
- 壓縮方式
- 有損或無損
WAV
Waveform Audio File Format包在微軟／IBM 封裝格式中的原始未壓縮 PCM 音訊。完全不捨棄任何資料，因此成為錄音與後期母帶處理的標準——體積大約是同樣內容 MP3 檔的十倍。
- 開發者
- Microsoft / IBM
- 發布年份
- 1991
- 副檔名
- .wav, .wave
- MIME 類型
- audio/wav
- 壓縮方式
- 未壓縮
- WAV stores the incoming samples as provided, so this step does not add generic quality loss. If the source M4A was already lossy, those earlier losses remain.
關於 M4A 轉 WAV 的常見問題
這個 M4A 轉 WAV 轉換器是免費的嗎？
是的。在這裡把 M4A 轉換為 WAV 完全免費，不需要帳號、沒有浮水印，也沒有每日次數限制。處理在你自己的裝置上完成，因此沒有需要轉嫁給你的伺服器成本。
我的 M4A 檔案會被上傳到任何地方嗎？
For browser-based pairs, your file is read locally and converted by ffmpeg in this tab. No file payload is uploaded; you may still see analytics and engine downloads in network logs.
M4A 轉 WAV 有檔案大小限制嗎？
There is no imposed upload cap when it runs in-browser, but each conversion still depends on your device and browser memory. Large videos are the first practical limit, then memory-heavy documents or images.
把 M4A 轉換為 WAV 會損失品質嗎？
No. WAV stores its data losslessly, so everything in your M4A file is preserved exactly.
可以一次把多個 M4A 檔案轉換為 WAV 嗎？
Yes. Drop in several files and each gets its own row; they are processed one after another on your device. You can download them one by one or as one ZIP.
M4A 轉 WAV 能在手機、Mac 或 Chromebook 上使用嗎？
Most modern browsers on Windows, macOS, Linux, ChromeOS, Android and iOS work. Very large videos are often more reliable on desktop or a browser with more memory.
Why do some conversions take longer on first run?
The conversion engine has to download first. Small codec bundles are fast, while ffmpeg is commonly 12–30 MB; later conversions of similar type use the cached engine.
I converted a file and the output is blank or unusable. What should I check?
Start over with default settings, then change one option at a time (quality, bitrate, page size, or codec) to isolate what changed behavior. If it keeps failing, retry with a smaller file and confirm the source format matches the pair.
將其他格式轉換為 WAV
這裡有 41 種格式可以轉換成 WAV。
將 M4A 轉換為其他格式
一個 M4A 檔案可以轉換成以下任何一種格式。