Audio tool

Convert M4A Files to FLAC on Your Device

Convert M4A to FLAC in your browser for lossless distribution. The source remains on your device throughout local processing.

Route M4A → FLAC

or drop here · up to 500 MB

Max 50 MB per file

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When your browser supports it, your audio plays here. You can still convert your file if preview does not load.

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Adapt everyday audio delivery to a workflow built for lossless distribution
Supply FLAC when an editor, player, or delivery form will not accept M4A
Create a FLAC copy from M4A for music archives, mastering, and lossless playback

On-device encoding can work the processor harder than ordinary playback during this M4A-to-FLAC job.
Large M4A inputs may take several minutes on older hardware.
Compare the FLAC duration with the source before publishing.

FLAC serves music archives, mastering, and lossless playback, whereas M4A commonly serves Apple devices, podcasts, and compact music files.
For M4A-to-FLAC delivery, plan for larger files than lossy formats.
After leaving M4A, the receiving app must support the streams encoded inside FLAC, not only its extension.

M4A to FLAC taking too long? Check available memory; long, high-resolution sources need substantially more.
FLAC converted from M4A not opening? Test a compatible player and inspect the output streams.
If FLAC is rejected, compare its codec and stream settings with the destination specification.

When does M4A to FLAC conversion make sense?

It is useful when M4A media created for everyday audio delivery must enter a FLAC system designed for lossless distribution.

Where is the M4A source processed?

The browser prepares FLAC from M4A on this device instead of sending the source to a remote conversion server.

How can I approve FLAC converted from M4A?

Test the FLAC file in the receiving app and compare duration, channels and loudness with the M4A source.

Quick use cases