Convert M4A to FLAC Online Free
Convert your .m4a files to .flac format. Free, fast, and processed entirely in your browser — your files never leave your device.
What is M4A?
MPEG-4 Audio (.m4a) — M4A is an audio-only MPEG-4 container, typically containing AAC-encoded audio. It is Apple's preferred audio format and supports both lossy and lossless compression (Apple Lossless).
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.
M4A vs FLAC
| Feature | M4A | FLAC |
|---|---|---|
| Full Name | MPEG-4 Audio | Free Lossless Audio Codec |
| Compression | Lossy | Lossless |
| Typical Bitrate | 128-256 kbps | 600-1,000 kbps |
| Best For | Apple Music, iTunes, iPhone/iPad audio | Audiophile music collections, archiving, high-fidelity playback |
| File Extension | .m4a | .flac |
Frequently Asked Questions
Is converting M4A to FLAC 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 M4A to FLAC?
Converting from lossy M4A to lossless FLAC will not restore lost audio data, but it will preserve the existing quality without further degradation.
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.