M4A to FLAC Converter

Save your Apple M4A audio as an open FLAC file for libraries and players that prefer it. Free, in your browser, with no signup and no watermark.

Select M4A file →

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Updated June 2026

M4A is Apple's MPEG-4 audio, usually lossy AAC but sometimes lossless ALAC, while FLAC is an open lossless format that more players and music servers accept by default. EchoWave converts M4A to FLAC in your browser, free and with no signup, so your audio lands in a format that runs on Android, Plex, VLC, and most home audio gear. FLAC compresses without throwing anything away, so a lossless source stays lossless at roughly half the size of WAV.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert M4A to FLAC

1
Upload your M4A
Drag your M4A onto the converter or pick it from your device. Nothing to install.
2
Choose FLAC and convert
Select FLAC as the output, set the bitrate if it applies, then start. Free, with no sign-up.
3
Download your FLAC
Save the finished FLAC, or open it in the editor to trim or adjust it first.

Try it

Estimate your FLAC

Pick a typical rate and a length to see the FLAC file size before you convert.

Typical rate

Length10 min

1 min60 min

Estimated FLAC size66MBTypical music

FLAC is lossless, so the real size depends on the music. These are typical ranges.

The formats

M4A vs FLAC

M4A

MPEG-4 Audio

Apple-friendly AAC audio

Type: Lossy audio, usually AAC
Holds: AAC audio in an MP4 container
Typical size: Small, smaller than MP3 at the same quality
Plays on: iPhone, Mac, iTunes, and most players

Best for:Apple devices and clean compressed audio

FLAC

Free Lossless Audio Codec

Lossless audio at about half the size of WAV

Type: Lossless audio format
Holds: Compressed audio with no quality loss
Typical size: About half the size of WAV
Plays on: VLC and most players, not older iPhones by default

Best for:Archiving music at full quality

Will it lose quality?

Converting a lossy file to a lossless one cannot restore detail that was already discarded. It only makes a larger file.
Going from a high-quality source to FLAC keeps the sound clear while changing the format.
Each pass between two lossy formats loses a little, so always convert from the best source you have.

Use cases

What people use it for

Music librariesStandardise your collection

ListenersUse a format your player likes

PodcastersMatch your host requirements

EditorsImport audio your tool accepts

DevicesPlay on phones and car stereos

Troubleshooting

If something looks off

The FLAC is larger than I expected

Lossless and uncompressed formats are big by design. If you want a smaller file, pick a lossy format and a bitrate around 192 to 256 kbps.

The song details are missing

Title, artist, and album travel as tags when the source has them. If they are blank, add them in any music app after converting.

My app will not open the FLAC

Most apps open common audio, but a few are picky. VLC plays almost anything, or convert to MP3 for the widest support.

FAQ

M4A to FLAC questions

Is the M4A to FLAC converter free?

Yes. EchoWave converts M4A to FLAC with no signup, no file-count limit, no trial, and no watermark. Upload your M4A, convert it, and download the FLAC from your browser.

Does converting M4A to FLAC improve sound quality?

It depends on what your M4A holds. If it is lossless ALAC, the FLAC is a perfect copy at the same quality. If it is the more common lossy AAC, FLAC cannot rebuild detail the encoder already removed. Either way you get an open lossless container, but quality is never created by the conversion.

Is my M4A lossless ALAC or lossy AAC?

Most M4A files, including iTunes downloads and Voice Memos, are lossy AAC. ALAC is less common and usually comes from someone who ripped a CD with Apple Lossless on purpose. If you are not sure, assume AAC, which means FLAC will preserve it but not enhance it.

Why convert M4A to FLAC instead of keeping M4A?

FLAC is open and broadly supported on Android, Linux, VLC, and music servers like Plex and Jellyfin, where M4A can be hit or miss. It is the better choice for a long-term, player-agnostic library, especially when your source is already lossless.

How big are FLAC files compared with M4A and WAV?

FLAC is lossless, so it is larger than a compressed M4A but about half the size of an uncompressed WAV of the same audio. The exact size depends on the music, since denser tracks compress less.

Does the FLAC keep the title, artist, and album?

Yes, where your M4A includes them. FLAC supports tags well, so title, artist, and album usually carry over, and you can edit them in any music app if something is missing.

Does the M4A to FLAC converter work on iPhone, Android, Mac, and Windows?

Yes. The converter runs in any browser on iPhone, iPad, Android, macOS, Windows, Chromebook, and Linux. Upload your M4A, pick FLAC, and download, with nothing to install.

What plays FLAC files?

VLC, Android, foobar2000, Plex, and most modern players handle FLAC. Older iPhones did not play it by default, though newer Apple software does. For the widest reach on any device, MP3 is the safer pick.

Can I convert several M4A files at once?

There are no file-count limits on these pages, so you can convert tracks one after another. Larger or longer files take a little more time to upload and convert.