Convert M4A to ALAC

Tested on Windows 11, 24 October 2026

Convert M4A audio to ALAC in your browser or in the Filoshi app for Windows. ALAC stores the decoded audio without further loss. Nothing is uploaded.

Get Filoshi · $29Many files at once, no size limit, on Windows.

How to convert M4A to ALAC in your browser

  1. 1
    Drop your M4A file
    Drag it onto Filoshi above, or press Choose your M4A file to pick it on your computer.
  2. 2
    Filoshi converts it
    ALAC is chosen already. FFmpeg, compiled to WebAssembly, converts it inside this browser tab.
  3. 3
    Save your ALAC file
    Download it when it is ready. Nothing was sent to a server.
Source format

What is M4A?

MPEG-4 Audio (.m4a). M4A is an MP4 file that holds only audio, normally AAC (sometimes Apple Lossless). It is what iTunes, Apple Music downloads without DRM and iPhone voice memos use.

Common use: Apple Music and iTunes, voice memos, podcasts

Output format

What is ALAC?

Apple Lossless Audio Codec (.alac). ALAC is Apple's lossless codec: like FLAC it decodes to exactly the original audio, at roughly half the size of WAV. Apple released it as open source in 2011; iTunes, Apple Music and iPhones play it natively.

Common use: Lossless music on Apple devices

Questions about M4A to ALAC

Is converting M4A to ALAC free?
Yes, one file at a time: the converter on this page runs in your browser, files up to 100 MB, no sign-up. The Filoshi desktop app ($29 once, for Windows) converts many files at once and has no size limit.
Does converting M4A to ALAC lose quality?
No further loss: ALAC keeps exactly what is decoded from the M4A file. It cannot bring back detail that M4A's lossy compression already removed, and the ALAC file is usually larger.
Is my M4A file uploaded anywhere?
No. The converter on this page runs in your browser with FFmpeg compiled to WebAssembly; your M4A file is read and converted on your device and never sent to a server. The desktop app works the same way, offline.
Has M4A to ALAC been tested?
Yes. M4A to ALAC is one of the 1,841 conversions that passed Filoshi's automated test matrix on Windows 11.
Can I convert many M4A files at once?
Yes, in the desktop app. Drop as many M4A files as you like on the window, pick ALAC once for all of them, and each file shows its own progress. The new files appear next to the originals, which are never changed.

Related conversions

Other M4A conversions

M4A to MP3M4A to AACM4A to OGGM4A to FLACM4A to OPUSM4A to AIFFM4A to AC3M4A to AU

Convert to ALAC

MP3 to ALACWAV to ALACAAC to ALACOGG to ALACFLAC to ALACWMA to ALACOPUS to ALACAIFF to ALAC

Need M4A to ALAC for many files?

The browser converter handles one file at a time. The Filoshi app for Windows converts as many as you drop, runs offline, and has 1,841 tested conversions.

Get Filoshi · $29