Convert AAC to FLAC

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You can convert AAC to FLAC for free above: just know the FLAC will sound identical to the AAC, not better; lossless can't restore discarded detail.

Let's be straight with each other: converting AAC to FLAC will not bring back detail the AAC encoder already threw away. What you do get is a FLAC that behaves like one: built for archiving music with zero quality loss and a genuine size saving: which is often exactly what an editor, burner or archive pipeline demands instead of an AAC.

FYI

Honest warning: a FLAC made from AAC is lossless from here on, but it can't restore what the AAC encoder already discarded. It will sound exactly like your AAC: just bigger.

Why flip AAC to FLAC

AAC is MP3's better-trained successor: cleaner sound from the same number of bits. It was born in 1997, an MPEG all-star team: Fraunhofer, Dolby, Sony, AT&T and Nokia, and its real weak spot is older or stubborn hardware that only ever learned MP3.

FLAC is the audiophile's handshake: CD-perfect sound at roughly half the shelf space. Free Lossless Audio Codec: think ZIP for sound: it decompresses back to the exact original. That makes it the right destination when what you need is archiving music with zero quality loss and a genuine size saving.

How to convert AAC to FLAC

1
Drop your AAC file into the flipper above, or click to browse for it.
2
Check the output format: FLAC is already selected for you.
3
Hit Convert, give it a moment, then download your new FLAC.

AAC vs FLAC, side by side

	AAC	FLAC
Born	1997, an MPEG all-star team: Fraunhofer, Dolby, Sony, AT&T and Nokia	2001, Josh Coalson; now kept by the open Xiph.Org Foundation
Type	audio · lossy	audio · lossless
Best for	streaming-grade sound at friendly file sizes	archiving music with zero quality loss and a genuine size saving
Weak spot	older or stubborn hardware that only ever learned MP3	fitting in pockets: lossless is still large: and charming Apple's own apps
Typical size	similar to MP3, but it sounds better at the same bitrate: or the same at about 25% smaller	around 5 MB per minute: half of WAV, five times an MP3
Plays on	Apple everything, YouTube, Android, modern players; patchy on legacy gear.	Hi-fi gear, Android, VLC, most desktop players; iTunes and Apple Music look away.

Questions people ask

Will converting AAC to FLAC lose quality?

It won't lose more, and it won't gain any back. The FLAC preserves your AAC exactly as it is now: including whatever the original lossy encode discarded.

Will the FLAC file be bigger or smaller than my AAC?

Bigger: usually several times bigger. FLAC runs around 5 MB per minute: half of WAV, five times an MP3, and none of that extra space adds quality to an AAC source.

Where will the FLAC file play?

Hi-fi gear, Android, VLC, most desktop players; iTunes and Apple Music look away. That's the usual reason people leave AAC behind: FLAC simply opens in more of the places that matter.

How long does AAC to FLAC conversion take?

Seconds for most files: audio is light work. A long recording might take a minute; your file auto-deletes from our servers within an hour either way.

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