Playing FLAC on an iPhone comes down to one choice: which app you open the file in. The Files app has played FLAC natively since iOS 11, so you can tap and listen without converting anything. Apple Music will not import FLAC into its library, and neither will Music on the Mac. You have two paths. Keep the files in Files for direct playback, or convert them to a format Apple Music accepts. Decide whether you want bit-perfect ALAC or compact AAC M4A.

The FLAC Split Files App Vs. Music App

The Files app plays FLAC natively on any iPhone running iOS 11 or later. Copy a FLAC file to the phone, open it in Files, and listen. No conversion, no waiting. This works for casual listening. You cannot add that FLAC to the Apple Music library, and you lose playlists, ratings, and cross-device syncing.

Apple Music ignores FLAC files completely. Drop one into the library and nothing happens. That is deliberate. Apple pushes its own bit-perfect format, ALAC, which lives inside .m4a files. Apple Music accepts ALAC without complaint, so those files sit alongside AAC tracks in your library.

When to Keep FLAC in the Files App

Skip conversion if you only play individual tracks and never touch the Apple Music library. Browse folders in Files, tap a track, and it plays. This suits a large existing FLAC collection that you want to hear on the phone without re-encoding anything.

The Files app is not a music player. No album art. No gapless playback. No playlists. No artist or album sorting. If any of that matters, convert the files.

Converting FLAC to ALAC for Apple Music

ALAC is Apple's own bit-perfect format, stored in .m4a files. Converting FLAC to ALAC preserves the audio data exactly. File size stays close to the original FLAC. Apple Music supports ALAC, so these .m4a files import into the library, sync to the phone, and work with every Music app feature.

Choose this route when you want perfect quality inside Apple Music. The cost is storage: ALAC files are large, just like FLAC. Make sure the phone has room.

Convert FLAC to ALAC

Use a converter that supports ALAC encoding. The process is simple:

  1. Select your FLAC files.
  2. Choose ALAC as the output format, often listed as Apple Lossless or M4A with ALAC codec.
  3. Run the conversion. The result is .m4a files containing bit-perfect audio.
  4. Add the .m4a files to Apple Music. They import without issue.

Converting FLAC to AAC for Smaller Size

AAC is Apple's compressed format, also stored in .m4a files. Converting FLAC to AAC discards audio data to shrink the file. AAC sounds slightly better than MP3 at the same bitrate, so it is the right call when storage is tight. Apple Music plays AAC natively, and these files import without friction.

Pick AAC to fit more music on the phone, especially for portable listening. You give up the fine detail of the original FLAC. Keep the FLAC originals as your archive.

Convert FLAC to AAC M4A

Use a converter that outputs AAC in an M4A container. The megamp3converter.net Convert to M4A tool produces AAC at 96 to 320 kbps, a compressed M4A rather than ALAC. The steps:

  1. Upload or select your FLAC files.
  2. Choose a target bitrate. Higher bitrate means better quality and a larger file.
  3. Start the conversion. The output is .m4a files with AAC audio.
  4. Add the .m4a files to Apple Music. They import and play.

FLAC Vs. ALAC Vs. AAC Key Differences

Here is the comparison that matters:

  • FLAC (Free Lossless Audio Codec): Bit-perfect, large files, not supported by Apple Music, plays in the iPhone Files app.
  • ALAC (Apple Lossless): Bit-perfect, similar size to FLAC, fully supported by Apple Music. Convert FLAC to ALAC to keep perfect quality inside the Apple ecosystem.
  • AAC (Advanced Audio Coding): Compressed, much smaller files, supported by Apple Music. Convert FLAC to AAC to save space, and accept the quality drop.

Coming from Android? Android plays FLAC natively, so you may never have converted before. On iPhone, pick a route and commit.

FLAC to M4A and ALAC Confusion

"FLAC to M4A iPhone" is ambiguous because M4A is a container that holds either AAC or ALAC. When a tool converts to M4A, check which codec it produces. The megamp3converter.net Convert to M4A tool outputs AAC, not ALAC. If you want Apple Lossless, find a converter that specifically outputs ALAC.

"FLAC to ALAC" always means a bit-perfect conversion. "FLAC to M4A" could be either. Verify the output codec before you import anything.

Adding Converted Files to Apple Music

Once you have ALAC or AAC .m4a files, add them to Apple Music. On a Mac, open the Music app, go to File > Add to Library, and select the files. On an iPhone, transfer the files via a cloud service or cable, open them in the Files app, and choose to add them to Apple Music. ALAC and AAC both import this way.

If you need to add FLAC to iTunes, know that older iTunes versions could import FLAC with a plugin. Current Apple Music on Mac cannot. Convert to ALAC or AAC first.