Convert FLAC to AAC online in seconds — free, with no sign-up. AAC is lossy and ideal for the Apple ecosystem and high-quality streaming. Your files are encrypted and deleted automatically after 24 hours.
FLAC
Free Lossless Audio Codec — Open-source lossless audio that's 40–60% smaller than WAV with zero quality loss.
AAC
Advanced Audio Coding — A modern lossy codec that sounds better than MP3 at the same bitrate; Apple's default.
How to convert FLAC to AAC
- 1Upload your FLAC file
Click “Choose a file” or drag and drop your FLAC file onto the page — no sign-up or email needed.
- 2Convert to AAC
AAC is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your AAC file
Your AAC file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
FLAC vs AAC
| FLAC | AAC | |
|---|---|---|
| Full name | Free Lossless Audio Codec | Advanced Audio Coding |
| Type | Audio | Audio |
| Compression | Lossless | Lossy |
| Best for | archiving and audiophile listening | the Apple ecosystem and high-quality streaming |
Frequently asked questions
Does converting FLAC to AAC lose quality?
FLAC is lossless and AAC is compressed, so a small amount of data is discarded. We use a high-quality default, so the AAC file sounds identical to the original to the human ear while being much smaller.
What's the difference between FLAC and AAC?
Free Lossless Audio Codec (FLAC) is lossless and best for archiving and audiophile listening. Advanced Audio Coding (AAC) is lossy and best for the Apple ecosystem and high-quality streaming. Convert FLAC to AAC when you need a audio for the Apple ecosystem and high-quality streaming.
Is the FLAC to AAC converter free?
Yes — converting FLAC to AAC is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my FLAC files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert FLAC to AAC on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert FLAC to AAC?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert FLAC files to?
Besides AAC, you can convert FLAC to AIFF, M4A, MP3, OGG, OPUS, WAV and more — see the full list of FLAC conversions below.
Other conversions
Last updated July 2026