FLAC to M4A Converter

Convert FLAC to M4A Online

FLAC files are lossless and play everywhere except, conveniently, the Apple ecosystem — the Music app, iPhones, and older iTunes installs would rather have an M4A. This converter turns your FLAC into an AAC-in-MP4 M4A that drops straight into an Apple library, picks up cover art and tags, and ends up a fraction of the original size. One thing to know up front: M4A on this tool means AAC, which is lossy — great for portable listening, but if you need to keep every bit of the original, see the note under the table.

How to Convert FLAC to M4A

1. Upload Your FLAC File: Drag and drop your .flac file onto the page or click "+ Add Files". Multiple files convert in one batch with the same settings.
2. Pick a Quality Preset: Open Advanced Options and choose a Quality Preset — "Very High (Recommended)" maps to roughly 256 kbps AAC, the same target Apple Music and the iTunes Store use. For a fixed rate, switch to Constant Bitrate (8–384 kbps).
3. Adjust Sample Rate or Channels (Optional): Leave Audio Sample Rate and Audio Channel on "Original" to match the source, or downmix to Mono and drop to 16 kHz for a spoken-word file you want to shrink.
4. Convert and Download: Click Convert and your M4A downloads in seconds. No sign-up, no watermark.

FLAC vs M4A (AAC): What Changes in the Conversion

Want to stay lossless on Apple gear? This tool's M4A output is AAC, so it is not bit-perfect. M4A can hold Apple Lossless (ALAC), which matches FLAC quality, but that codec is not offered here — keep the original FLAC for archiving, or convert to WAV if you need an uncompressed lossless file an editor will accept.

Frequently Asked Questions

Is M4A the same as MP4, and will iTunes recognize it?

They share the MPEG-4 container, but .m4a is the audio-only flavor Apple uses for music while .mp4 usually carries video. The Music app, iTunes, and iOS all treat .m4a as a native music file, so a converted track imports cleanly and shows its title, artist, and album art if the FLAC carried those tags.

Does converting FLAC to M4A lose quality?

Yes — the M4A here uses AAC, a lossy codec, so some inaudible detail is permanently discarded and you cannot reconstruct the original FLAC from it. At 256 kbps (the "Very High" preset) most listeners cannot tell AAC from lossless on normal gear, which is why Apple ships its store catalog at that rate. If you need a bit-perfect copy, keep the FLAC.

What bitrate should I choose for FLAC to M4A?

For music, 256 kbps (Very High) is the sweet spot and matches the iTunes Store standard; 320 kbps via Constant Bitrate is the practical ceiling for AAC and rarely audibly better. For podcasts, audiobooks, or voice memos, 96–128 kbps mono is plenty and roughly halves the file again. In our testing, a 40 MB FLAC track (about four minutes) converted to a 7.6 MB M4A at the 256 kbps preset with no audible difference on standard headphones.

Will the M4A keep my album art and metadata?

Yes. Title, artist, album, track number, and embedded cover art carried in the FLAC's Vorbis comments are mapped into the M4A's MPEG-4 tags during conversion, so your Apple library stays organized without re-tagging.

How big can my FLAC file be, and is it private?

There is no fixed file-count cap; the real limit is how large a file you can upload over your connection — a long lossless concert recording takes longer to send than a single track. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public. To go the other direction later, the M4A to FLAC converter rebuilds a FLAC container (though it cannot restore detail AAC already discarded).