Convert FLAC to AAC
Convert FLAC files to AAC locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert FLAC to AAC
- Drop your .flac files above, or click Upload Files. You can add many files at once.
- AAC is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .aac files as soon as each one finishes.
What to know about FLAC to AAC conversion
- AAC is lossy, so files become much smaller than the FLAC source. 192 kbps or higher is transparent for most listeners.
- You can choose the bitrate, sample rate and channels (mono, stereo or a 3D spatial effect).
FLAC vs AAC
| Feature | FLAC (Free Lossless Audio Codec) | AAC (Advanced Audio Coding) |
|---|---|---|
| Compression | lossless | lossy |
| Best for | archiving music without any quality loss | good quality at low bitrates for streaming |
| Opens in | VLC, foobar2000, Android and most hi-fi players | Apple devices, browsers and most media players |
FLAC (Free Lossless Audio Codec): An open-source lossless audio compression format, preserving perfect audio quality at reduced file sizes.
AAC (Advanced Audio Coding): A lossy digital audio compression format designed as the successor to MP3, offering higher sound quality at similar bitrates.
Conversion options
- Bitrate from 96 to 320 kbps
- Sample rate: 22.05, 44.1 or 48 kHz
- Mono, stereo or 3D spatial audio
- Playback speed (0.5× to 2×)
Frequently asked questions
Is it safe to convert FLAC to AAC here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several FLAC files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert AAC to FLAC.
Convert FLAC to other formats
Convert other formats to AAC
- MP4 to AAC
- MP3 to AAC
- WAV to AAC
- MOV to AAC
- M4A to AAC
- WEBM to AAC
- MKV to AAC
- OGG to AAC
- OPUS to AAC
- AVI to AAC
- WMA to AAC
- AIFF to AAC
See every FLAC converter and AAC converter, or browse the full converter directory.