Audio Converter

Import Your FLAC Masters into iTunes, Apple Music, and GarageBand

Upload your FLAC file and get an M4A that drops straight into your iTunes library, syncs to iPhone and iPad through Apple Music, opens as a GarageBand track, and plays natively across every Apple device — with the quality advantage of being encoded from a perfect, lossless source.

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Import Your FLAC Masters into iTunes, Apple Music, and GarageBand
Free Tool

Audio Format Converter

Upload any audio file, choose an output format, and download the converted result. Supports MP3, WAV, FLAC, AAC, OGG, ALAC, WMA, Opus and M4A.

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Person at a MacBook building an Apple Music library with music files on the desktop
01

Build Your iTunes Library from Lossless FLAC Rips

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Music producer at a MacBook with GarageBand open showing colorful audio tracks
02

Open FLAC Recordings as GarageBand Project Tracks

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iPhone and iPad showing the same music library in Apple Music, on a desk together
03

Sync Lossless-Sourced Audio to iPhone via iCloud Music Library

See It in Action
How It Works

Three steps to an iTunes-ready M4A from a lossless source

1

Upload your FLAC file

Drop your FLAC file onto the tool or click to browse. CD rips, studio masters, DAW exports, and archival recordings are all accepted.

2

Convert to M4A

Click "Convert". FFmpeg decodes the FLAC losslessly to PCM and encodes it as AAC inside an M4A container at a high bitrate — one clean encoding pass from a perfect uncompressed source.

3

Download your M4A file

Download your .m4a file and drag it into iTunes or Apple Music, open it in GarageBand, or AirDrop it directly to an iPhone or iPad.

Deep Dive

FLAC to M4A: Open Lossless Archive to Apple's Native Music Container

FLAC is the universal lossless archive format. M4A is Apple's native music container — the format iTunes creates, Apple Music downloads in, and GarageBand works with. Converting between them brings a lossless library into Apple's music management ecosystem.

iTunes users, GarageBand producers, and Apple Music listeners converting FLAC to M4A
01

FLAC: Lossless Archive, Not Apple-Compatible

FLAC (Free Lossless Audio Codec) stores audio with no information loss and is the preferred format for audiophile collections, CD rip archives, and studio masters. It is widely supported by Roon, Plex, VLC, and every serious media player — but not by Apple. iTunes, Apple Music, the iOS Music app, and GarageBand all exclude FLAC from their supported format lists.

TypeLossless compression, open-source
iTunes/Apple MusicNot importable — FLAC is not supported
GarageBandCannot open FLAC audio files directly

The FLAC master should always be kept as the archive source. M4A is the derivative for Apple ecosystem use.

02

M4A: Apple's Native Music Container

M4A is the MPEG-4 audio container Apple uses for everything in its music ecosystem — iTunes purchases, Apple Music downloads, GarageBand exports, Voice Memos recordings, and iCloud Music Library files all use M4A. It holds AAC audio (or ALAC for lossless) and is hardware-decoded on every Apple device. iTunes and Apple Music import M4A natively, and the file format integrates completely with Apple's music management pipeline.

Codec insideAAC (lossy) for compressed delivery; ALAC (lossless) for full quality
iTunes/Apple MusicNative import, full metadata, syncs to all Apple devices
GarageBand and Logic ProImports as audio region in any project

For a lossless M4A with no quality loss at all, convert FLAC to ALAC (which also uses the .m4a extension) instead.

03

Quality: Encoding AAC from a Lossless FLAC Source

The quality of any AAC file depends on the signal the encoder receives. Converting FLAC to M4A gives the AAC encoder a perfect, uncompressed PCM signal — no quality ceiling from a prior lossy codec, no artefacts from an intermediate format. The resulting M4A is the best possible AAC at the target bitrate — a first-generation encode from a lossless master.

FLAC -> M4AOne encoding pass from perfect PCM: best achievable quality
MP3 -> M4ASecond lossy pass: quality ceiling already reduced
Recommended bitrate256 kbps for music; 128 kbps for voice content

If you want no quality loss at all in the M4A, choose ALAC as the output codec instead of AAC.

04

When M4A Is the Right Destination from FLAC

M4A is the right choice when the audio needs to live inside Apple's music ecosystem: iTunes library management, Apple Music sync, GarageBand project import, or iCloud Music Library. For a truly lossless Apple format, convert to ALAC. For the widest device compatibility beyond Apple, MP3 is the safer choice.

Use M4A (AAC) foriTunes library, Apple Music, iPhone sync, GarageBand, iCloud Music Library
Use M4A (ALAC) forLossless quality in Apple Music with no AAC encoding at all
Use MP3 forCar stereos, Android, non-Apple devices, universal sharing

Our converter uses FFmpeg to decode FLAC losslessly and encode as AAC in an M4A container at a high bitrate.

Benefits

Why Convert FLAC to M4A

🎵

iTunes and Apple Music Ready

M4A imports directly into iTunes and Apple Music and syncs to every connected iPhone and iPad with full metadata and album art.

🎸

Opens in GarageBand and Logic Pro

Drag the M4A into any GarageBand or Logic Pro project as an audio region ready for editing, mixing, and export.

☁️

Syncs via iCloud Music Library

M4A files imported into Apple Music upload to iCloud Music Library and become available on every Apple device on the account.

Fast Conversion

Most FLAC files convert to M4A in under 30 seconds on dedicated FFmpeg servers.

Who Uses It

Who Converts FLAC to M4A

Audiophiles building iTunes libraries from FLAC rips, musicians opening FLAC recordings in GarageBand, Apple Music subscribers adding personal FLAC masters to iCloud Music Library, and podcast producers editing in GarageBand from lossless source recordings.

iTunes users, GarageBand producers, and Apple Music subscribers converting FLAC to M4A
01

Audiophiles Building an iTunes Library from FLAC Rips

Music enthusiasts who rip CDs to FLAC for archival and want to manage their collection in iTunes or Apple Music can convert to M4A for import. The M4A integrates fully with iTunes' library management — auto-sorting by artist and album, cover art embedding, playlist support, and device sync — while being encoded from the lossless FLAC master.

Quality approachFLAC -> M4A: one clean AAC encode from perfect PCM
02

Podcast Producers Editing FLAC Recordings in GarageBand

Podcast producers who record locally to FLAC for quality archival and use GarageBand for editing need to convert to M4A before importing the recording into a GarageBand project. M4A drops into GarageBand as an audio region without any intermediate conversion step inside the app.

WorkflowFLAC recording -> M4A -> drag into GarageBand -> edit -> export episode
03

Apple Music Subscribers Adding Personal Recordings

Apple Music subscribers can use iTunes Match and iCloud Music Library to upload personal M4A tracks alongside the Apple Music catalog. Converting FLAC masters to M4A and importing them into Apple Music makes those tracks available on every Apple device on the account — iPhone, iPad, Mac, HomePod, and Apple Watch.

04

Musicians Creating Apple-Ecosystem Deliverables

Musicians who master tracks in FLAC and need to deliver M4A files to collaborators, labels, or sync supervisors on Apple devices can convert from the FLAC master. The M4A deliverable opens natively in GarageBand, Logic Pro, and any iOS audio app without requiring the recipient to install a FLAC decoder.

05

Home Studio Producers Sharing Demos via AirDrop

Home studio producers who record and mix to FLAC can convert to M4A for sharing with collaborators, clients, or band members on iPhone. AirDrop transfers M4A files to iPhone where they open in the Files app or add directly to Apple Music.

06

iOS App Developers Using the Media Library

iOS developers who build apps integrating with the Apple Music media library use M4A as the standard test audio format. Converting FLAC test recordings to M4A, adding them to iTunes, and syncing to a test device provides realistic test assets for MPMediaPickerController, AVAudioPlayer, and AVPlayer integration testing.

Converts using FFmpeg on dedicated servers.

Frequently Asked Questions

What is the difference between FLAC to M4A and FLAC to AAC?

AAC is the audio codec — the compression algorithm. M4A is the container file format that holds AAC audio. Converting FLAC to M4A produces a .m4a file containing AAC audio — the same audio as a plain .aac file, just in the MPEG-4 container that iTunes, GarageBand, and Apple Music expect. For Apple ecosystem use, M4A is the correct output format.

Why can't I import FLAC directly into iTunes?

iTunes and Apple Music support AAC (.m4a), MP3, WAV, AIFF, and Apple Lossless (ALAC). FLAC is an open-source format not included in Apple's supported list. Converting to M4A with AAC encoding is the standard approach for adding FLAC music to an iTunes library.

Should I convert FLAC to M4A with AAC or with ALAC?

If you want a compressed file for efficient iPhone storage and everyday listening, use AAC inside M4A — it produces the best possible AAC quality from a lossless source at a fraction of the FLAC file size. If you want bit-for-bit identical quality to the FLAC master with no quality loss at all, convert to ALAC (also stored in .m4a). Both are valid choices depending on your storage and quality priorities.

Can I open the converted M4A in GarageBand on Mac?

Yes. Drag the .m4a file into a GarageBand project window and it will appear as an audio region on a track. GarageBand imports M4A on both Mac and iPad natively.

Will the M4A sync to all my Apple devices via iCloud Music Library?

Yes. Once an M4A is imported into Apple Music on a Mac with iCloud Music Library enabled, it uploads and becomes available on every Apple device signed into the same Apple ID — iPhone, iPad, Mac, HomePod, and Apple Watch.

Is there a file size limit?

The upload limit is 100 MB per file. Most FLAC audio tracks are well within this limit.

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Ready to Convert Your FLAC to M4A?

Upload your lossless master above and get an iTunes-ready M4A in seconds.

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