Convert MP3 to ALAC

Tested on Windows 11, 24 October 2026

Convert MP3 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 MP3 to ALAC in your browser

  1. 1
    Drop your MP3 file
    Drag it onto Filoshi above, or press Choose your MP3 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 MP3?

MPEG Audio Layer III (.mp3). MP3 is the most widely supported audio format. It uses lossy compression: sound the ear is unlikely to notice is thrown away, so a song takes a few megabytes. Every phone, car stereo and music app plays it.

Common use: Music, podcasts, audiobooks and general audio sharing

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 MP3 to ALAC

Is converting MP3 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 MP3 to ALAC lose quality?
No further loss: ALAC keeps exactly what is decoded from the MP3 file. It cannot bring back detail that MP3's lossy compression already removed, and the ALAC file is usually larger.
Is my MP3 file uploaded anywhere?
No. The converter on this page runs in your browser with FFmpeg compiled to WebAssembly; your MP3 file is read and converted on your device and never sent to a server. The desktop app works the same way, offline.
Has MP3 to ALAC been tested?
Yes. MP3 to ALAC is one of the 1,841 conversions that passed Filoshi's automated test matrix on Windows 11.
Can I convert many MP3 files at once?
Yes, in the desktop app. Drop as many MP3 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 MP3 conversions

MP3 to AACMP3 to OGGMP3 to FLACMP3 to M4AMP3 to OPUSMP3 to AIFFMP3 to AC3MP3 to AU

Convert to ALAC

WAV to ALACAAC to ALACOGG to ALACFLAC to ALACM4A to ALACWMA to ALACOPUS to ALACAIFF to ALAC

Need MP3 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