Convert FLAC to AAC Online Free
Convert your .flac files to .aac format. Free, fast, and processed entirely in your browser — your files never leave your device.
What is FLAC?
Free Lossless Audio Codec (.flac) — FLAC is an open-source lossless audio codec. It compresses audio without losing any quality, resulting in files about 50-60% the size of WAV while preserving every detail.
What is AAC?
Advanced Audio Coding (.aac) — AAC is the successor to MP3, offering better sound quality at similar bitrates. It is the default audio format for Apple devices, YouTube, and many streaming services.
FLAC vs AAC
| Feature | FLAC | AAC |
|---|---|---|
| Full Name | Free Lossless Audio Codec | Advanced Audio Coding |
| Compression | Lossless | Lossy |
| Typical Bitrate | 600-1,000 kbps | 128-256 kbps |
| Best For | Audiophile music collections, archiving, high-fidelity playback | Apple devices, streaming services, mobile audio |
| File Extension | .flac | .aac |
Frequently Asked Questions
Is converting FLAC to AAC free?
Yes, completely free. The conversion runs entirely in your browser using WebAssembly — your files never leave your device and no sign-up is required.
Will I lose audio quality converting FLAC to AAC?
Converting from lossless FLAC to lossy AAC will result in some quality loss due to compression. For best results, use a higher bitrate setting.
What is the maximum file size?
You can convert audio files up to 100MB. Since the conversion happens in your browser, processing speed depends on your device's performance.
Is my audio file uploaded to a server?
No. All format conversion is processed locally in your browser using FFmpeg WebAssembly. Your files never leave your device, ensuring complete privacy.