Add your FLAC file
Drop one or more .flac files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
FLAC to ALAC
Re-encoding .flac audio as .alac changes how the sound is compressed and which players will accept it. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop FLAC files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting FLAC audio to Apple Lossless audio
Re-encoding .flac audio as .alac changes how the sound is compressed and which players will accept it. A .flac file contains audio compressed with the Free Lossless Audio Codec, which shrinks recordings without discarding a single sample. Decoded .flac output is bit-identical to the source, so the format has become the standard for music archiving and high-resolution downloads.
ALAC, the Apple Lossless Audio Codec, compresses music with zero quality sacrifice, and the .alac extension is occasionally used to label such files explicitly even though the codec normally travels inside an .m4a container. Decoding reproduces the original samples exactly, making it Apple's counterpart to FLAC. For this route the practical draw is native on every Apple platform from iOS to HomePod and mathematically lossless reconstruction — balanced against compresses slightly worse than FLAC on average, which is worth knowing before you commit a large batch.
Why convert FLAC to ALAC?
Two lossless codecs, one practical problem: FLAC is what the archive world standardized on, and Apple's Music app still will not import it. ALAC decodes to bit-identical samples, so a FLAC library re-encoded as ALAC loses nothing measurable and finally syncs to an iPhone, plays over AirPlay, and sorts properly in the Music app. Expect the ALAC files to land slightly larger — FLAC compresses a little better on average — and keep the FLAC originals as the archival copy.
FLAC vs ALAC at a glance
| Aspect | FLAC audio (.flac) | Apple Lossless audio (.alac) |
|---|---|---|
| Format type | Lossless — every pixel or sample is preserved exactly | Lossless — every pixel or sample is preserved exactly |
| How it stores data | linear prediction followed by Rice coding typically yields files 40 to 60 percent the size of raw PCM | linear-prediction compression conceptually similar to FLAC, typically reaching 40 to 60 percent of PCM size |
| Strongest at | ripping CD collections for permanent archival | building a lossless library that syncs cleanly to iPhones and the Music app |
| Weak spot | still several times larger than a good lossy encode | compresses slightly worse than FLAC on average |
| Metadata | vorbis comments for tags plus a dedicated PICTURE block for cover art; cue sheets can be embedded for whole-disc rips | inherits the full iTunes metadata atom set from its MPEG-4 container, including artwork, composer, and grouping fields |
Pick ALAC as the output
Select .alac in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if ALAC is selectable, the route is real and validated.
Convert on your device
Press Convert. The transcode runs on an FFmpeg engine compiled to WebAssembly, so the audio never leaves your device.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid ALAC file. Outputs keep the original filename with the .alac extension.
FLAC to ALAC questions, answered
Will converting FLAC to ALAC lose quality?
Both sides are re-encoded, so expect a small generation loss controlled by the quality setting: flac is lossless-oriented and alac is lossless-oriented. For visually or audibly transparent results keep quality high; for smaller files lower it and compare.
Is it private to convert FLAC files here?
Yes — the .flac file is processed inside your browser tab and never uploaded. The transcode runs on an FFmpeg engine compiled to WebAssembly, so the audio never leaves your device. Close the tab and the file is gone from memory.
Where will the ALAC file work?
Every Apple device and application plays ALAC natively, and cross-platform players such as VLC and foobar2000 handle it on Windows, Linux, and Android. Outside the Apple world support varies by player, which is why cross-platform archives still tend to favor FLAC.
Will the ALAC file be bigger or smaller than my FLAC?
It depends on the content: linear-prediction compression conceptually similar to FLAC, typically reaching 40 to 60 percent of PCM size. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my FLAC file?
This converter strips container metadata deliberately (the FFmpeg command runs with metadata mapping disabled) so exported files do not leak recording details. In the source, vorbis comments for tags plus a dedicated PICTURE block for cover art; cue sheets can be embedded for whole-disc rips; none of it is transmitted anywhere because the file never leaves your browser.
Can I convert ALAC back to FLAC?
Yes — the reverse route exists as a separate tool. Bear in mind that round-tripping .flac → .alac → .flac is not a perfect undo when any lossy step is involved; keep your original if fidelity matters.