Browser edition: files stay on your device. Up to 100 MB total and 10 minutes. First use downloads a 32 MB engine. Some formats depend on codec support. Public-link downloading is not ready on this free deployment.
Convert M4A to FLAC
Convert M4A to FLAC online for free. Real conversion, batch support, no sign-up.
How to convert M4A to FLAC
- Add your fileDrop it on the page, choose it from your device, or paste it with Ctrl+V.
- ConvertAdjust settings if you like, then press the button. You'll see live progress.
- Browser processing uses original files on your device. Public-link downloading is unavailable.
What happens to your file
M4A files are common for Apple Music, iPhone voice memos, podcasts, but not every app or device opens them. FLAC is ideal for archiving CDs, hi-fi listening, music collections. Spool converts M4A to FLAC with FFmpeg — real decoding and encoding, not a renamed file extension.
No quality is added. FLAC is uncompressed or lossless, so the result is larger than your M4A, but the detail removed when the M4A was created can't be restored. Convert to FLAC when an editor, DAW or device requires it.
Settings
- Sample rate — Original, 48 kHz, 44.1 kHz, 22 kHz
- Channels — Original, Mono
M4A vs FLAC
| M4A | FLAC | |
|---|---|---|
| Full name | MPEG-4 Audio | Free Lossless Audio Codec |
| Created by | ISO / Apple, 2001 | Xiph.Org Foundation, 2001 |
| Type | Lossy audio | Lossless audio |
| Typical contents | AAC (lossy) or ALAC (lossless) | FLAC (lossless) |
| Best for | Apple Music, iPhone voice memos, podcasts | archiving CDs, hi-fi listening, music collections |
| Strength | Better quality than MP3 at the same size | Bit-perfect, lossless quality |
| Weakness | Some older car stereos and players only accept MP3 | Several times larger than MP3 |
About M4A
- Type
- MPEG-4 Audio
- Contains
- AAC (lossy) or ALAC (lossless)
- Use
- Apple Music, iPhone voice memos, podcasts
About FLAC
- Type
- Free Lossless Audio Codec
- Contains
- FLAC (lossless)
- Use
- archiving CDs, hi-fi listening, music collections
FAQ
What bitrate should I choose for FLAC?
FLAC is lossless, so there is no bitrate to choose — you can only change the sample rate or switch to mono.
Can I convert several M4A files at once?
Yes. Drop up to 10 files at a time — each one is converted in parallel and you can download them individually or all at once.
Is there a file size limit?
Convert and edit files on your device. The browser edition accepts up to 100 MB total, media up to 10 minutes and video up to 4K. Codec availability and device memory can limit individual jobs.
Is this M4A to FLAC converter free and safe?
Yes. There are no pop-ups, redirects or fake download buttons, and no software to install. Files are transferred over HTTPS, processed in isolated job folders and deleted automatically.