M4A to FLAC Converter
Convert M4A files to FLAC format in seconds with optimal quality and zero data retention.
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JPG, PNG, WebP, MP4, MOV, MP3, PDF など50以上の形式に対応（最大1GB）
Format Comparison
M4A vs FLAC
Technical differences, compression algorithms, and core trade-offs between M4A and FLAC.
| Specification | M4A | FLAC |
|---|---|---|
| Full Name | M4A Apple Audio | FLAC Lossless Audio |
| Compression Type | Lossy | Lossless |
| Transparency Support | No | No |
| Developer | Apple Inc. | Xiph.Org Foundation (Josh Coalson) |
| Year Introduced | 2004 | 2001 |
M4A Key Advantages
- ✓High audio quality with compact size
- ✓Full support for album art, lyrics, and chapters
- ✓Native on iOS and macOS
FLAC Key Advantages
- ✓True studio lossless audio quality (up to 24-bit/192kHz Hi-Res)
- ✓Halves the size of raw WAV files
- ✓Open-source and royalty-free
How It Works
How to Convert M4A to FLAC
Three straightforward steps to convert your file.
1. Select your M4A files
Drag and drop your M4A files into the upload box or click to select from your device.
2. Adjust settings (Optional)
Fine-tune optional parameters such as resolution, compression quality, or audio bitrate.
3. Download your FLAC
Click "Convert Now" to process your files and instantly download the resulting FLAC files.
Why Choose HyperHelix Convert
Why Choose HyperHelix Convert
Engineered for speed, uncompromised quality, and complete privacy.
Lightning-Fast Speed
High-speed conversions powered by dedicated multi-threaded processing servers.
Pristine Output Quality
State-of-the-art engines (Sharp, FFmpeg) preserve visual clarity and sound fidelity.
Batch Processing
Upload up to 30 files in parallel and download all results in a single ZIP archive.
100% Private & Secure
Encrypted via 256-bit SSL and permanently deleted from our servers after 2 hours.
Granular Controls
Fine-tune resolution, CRF, bitrate, sample rates, channels, and crop/trim bounds.
Works on All Devices
Zero installation required. Runs seamlessly in Safari, Chrome, Edge, and mobile browsers.
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Frequently Asked Questions
Frequently Asked Questions about M4A to FLAC
Clear answers to common questions about file conversions, options, and privacy.