Free FLAC to AAC converter

Why convert FLAC to AAC?

People convert FLAC to AAC because FLAC keeps every bit of the original, which makes the files several times larger than they need to be, while AAC sounds better than MP3 at the same bitrate and plays on every Apple device.

How to convert FLAC to AAC

1. Choose your FLAC file. Drop it on the box above, or tap to browse. You can pick several files at once.
2. Confirm the target is .aac. It is preselected when your browser can encode it; otherwise the closest available target is chosen. Adjust quality, size or the other options if you want to.
3. Convert and download. Press Convert, then Download. Your file stays on your device the whole time.

What is a .flac file?

FLAC compresses audio to roughly half its size while preserving every original sample exactly. It is the format of choice for archiving a CD collection or distributing high-resolution music, at the cost of files several times larger than an MP3.

What is a .aac file?

AAC is the successor to MP3 adopted by Apple, YouTube and digital broadcasting, delivering better sound per kilobyte. A raw .aac file is the bare ADTS stream; the same audio inside an MP4 container is what people usually receive as .m4a.

What to expect from this conversion

The audio is decoded and re-encoded with the target codec. Choose 192 kbps or higher for music; speech is perfectly clear at less. Converting between two lossy formats always loses a little, so work from the original where you can. FLAC is lossless, so this is the best possible starting point for any conversion.

Is it private?

Yes, by design. Every conversion happens inside your own browser using your device’s processor — there is no server that receives your FLAC file, so there is nothing for anyone to store, scan or leak. You can confirm it yourself: open your browser’s developer tools, watch the Network tab while you convert, and you will see no upload.

Questions about FLAC to AAC

Is this FLAC to AAC converter free?

Yes, completely. There is no account, no daily limit, no watermark and no premium tier.

Is my FLAC file uploaded to a server?

No. The conversion runs inside your own browser using your device's processor. The file is read from your disk, converted in memory and saved back to your disk — nothing is transmitted, so there is nothing for anyone to store.

What happens to the quality?

The audio is decoded and re-encoded with the target codec. Choose 192 kbps or higher for music; speech is perfectly clear at less. Converting between two lossy formats always loses a little, so work from the original where you can. FLAC is lossless, so this is the best possible starting point for any conversion.

How do I convert FLAC to AAC on Windows, Mac or Linux?

The same way on all three: open this page in Chrome, Edge, Firefox or Safari, drop the FLAC file, press Convert and download the AAC. Nothing is installed and no admin permission is needed.

Can I convert several FLAC files at once?

Yes. Select as many files as you like and they are converted one after another in a single tap, with a download for each and a zip of all of them.

Can I convert FLAC to AAC without FFmpeg or a script?

Yes — that is what this page is for. FFmpeg does the same job well if you already have it set up and thousands of files to process; for one file, or a handful, the browser is faster than installing anything.

Should I keep the original FLAC file?

Yes — keep it, converting never touches it. The reason to make a copy in another format is that FLAC keeps every bit of the original, which makes the files several times larger than they need to be.

Related conversions

See all 399 conversions · Read the guides