Convert AAC to ALAC

Tested on Windows 11, 24 October 2026

Convert AAC 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 AAC to ALAC in your browser

  1. 1
    Drop your AAC file
    Drag it onto Filoshi above, or press Choose your AAC 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 AAC?

Advanced Audio Coding (.aac). AAC is the lossy codec designed to replace MP3, with better sound at the same bitrate. It is the audio of most MP4 videos, YouTube and Apple devices. Raw .aac files are a bare AAC stream without the M4A container.

Common use: Streaming, the sound track of MP4 video, Apple devices

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 AAC to ALAC

Is converting AAC 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 AAC to ALAC lose quality?
No further loss: ALAC keeps exactly what is decoded from the AAC file. It cannot bring back detail that AAC's lossy compression already removed, and the ALAC file is usually larger.
Is my AAC file uploaded anywhere?
No. The converter on this page runs in your browser with FFmpeg compiled to WebAssembly; your AAC file is read and converted on your device and never sent to a server. The desktop app works the same way, offline.
Has AAC to ALAC been tested?
Yes. AAC to ALAC is one of the 1,841 conversions that passed Filoshi's automated test matrix on Windows 11.
Can I convert many AAC files at once?
Yes, in the desktop app. Drop as many AAC 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 AAC conversions

AAC to MP3AAC to OGGAAC to FLACAAC to M4AAAC to OPUSAAC to AIFFAAC to AC3AAC to AU

Convert to ALAC

MP3 to ALACWAV to ALACOGG to ALACFLAC to ALACM4A to ALACWMA to ALACOPUS to ALACAIFF to ALAC

Need AAC 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