Does converting M4A to FLAC improve sound quality?

No. If your M4A uses AAC (lossy), converting to FLAC preserves the current quality but cannot restore details lost in compression. If your M4A is already lossless (ALAC), converting to FLAC keeps the same audio data—no loss, no gain. FLAC is best for archiving or editing, not for making lossy files sound better.

Will FLAC files play on my phone or music player?

Most Android phones, Windows PCs, and many modern music players support FLAC. iPhones and iPads do not play FLAC in the default Music app, but third-party apps (like VLC or Vox) can. Car stereos and smart speakers vary—check your device’s specs before converting a big library.

How much bigger is a FLAC file compared to M4A?

A typical 4-minute song in AAC M4A (256 kbps) is about 7–8 MB. The same track as FLAC will be about 25–35 MB. If your M4A was already lossless (ALAC), the FLAC will be a similar size. FLAC is designed for quality, not for size savings.

Can I convert M4A to FLAC without losing metadata?

Yes, most tags like title, artist, and album are kept during conversion. However, some less common metadata (like embedded images or Apple-specific tags) may not transfer perfectly. Always check the FLAC file after conversion if metadata is important for your workflow.

What if my M4A won’t open in the converter?

Some M4A files with unusual codecs or DRM (copy protection) cannot be converted. Most iPhone and iTunes M4A files work. If you see an error, try playing the file in VLC or converting to WAV first using a different tool, then convert WAV to FLAC.

Is FLAC better than ALAC for archiving?

Technically, both are lossless and sound identical. FLAC is open, widely supported, and easier to use on non-Apple devices and with open-source tools. ALAC (in M4A) is mainly for the Apple ecosystem. For long-term storage or sharing, FLAC is the safer bet.

Can I use this tool on my phone or tablet?

Yes. Videozify runs in Chrome, Safari, or Firefox on iOS and Android. Large files (over 200 MB) may be slow or hit device memory limits. For big conversions, a desktop browser is more stable. No files are uploaded, and everything runs locally.

Are there free desktop alternatives to convert M4A to FLAC?

Yes. VLC (Windows/Mac/Linux) can convert M4A to FLAC: use Media > Convert/Save. Audacity (with FFmpeg) can import M4A and export FLAC. Both require installation and some setup. macOS Music.app and iTunes can convert to ALAC but not FLAC.

M4A → FLAC

M4A to FLAC Converter

Drop a file here

Click to browse, or paste a file from the clipboard.

Choose file

This M4A to FLAC converter creates a lossless FLAC file from your M4A audio, right in your browser. No files leave your device. The result is a FLAC file with the same audio quality as the original (if the M4A was lossless), or the best possible copy (if the M4A was compressed). Drop your M4A, convert, and download the FLAC for archiving, editing, or playback on more devices.

How to convert M4A to FLAC

Drop your M4A file into the box above, or click Browse to select it from your computer.
Check that the file loaded correctly. No settings are needed; FLAC is always lossless.
Press Convert and wait for the progress bar to finish.
Download the FLAC file when ready. The converted audio never leaves your browser.

Why convert M4A to FLAC?

M4A files are common on Apple devices, iTunes, and iPhones. They usually contain AAC (lossy) or ALAC (lossless) audio. If you need a true lossless format that is open and widely supported, FLAC is the practical choice. FLAC is the standard for archiving, editing, and sharing lossless music or spoken word. Many editors, streamers, and archivists require FLAC instead of M4A for compatibility or peace of mind.

You might want FLAC if you plan to edit your audio in Audacity, share stems with collaborators, upload to Bandcamp, or keep a permanent copy. FLAC is supported on Windows, Linux, Android, and most media players. M4A/ALAC, while lossless, is not always recognized outside the Apple ecosystem. FLAC is also easier to tag and manage with open-source tools.

A typical 4-minute M4A song at 256 kbps AAC is about 7.5 MB. After converting to FLAC, the file will grow to around 25–35 MB (about 3–5× larger) because FLAC preserves all audio data in a lossless format. If your M4A was already lossless (ALAC), the resulting FLAC will be similar in size and identical in quality. If your M4A was lossy (AAC), FLAC cannot restore lost details, but it will keep the current quality without further loss.

You should not convert to FLAC if you only want a smaller file for your phone or streaming. FLAC is for maximum quality and future-proofing, not for saving space. If you started with a lossy M4A (AAC), converting to FLAC will not improve the sound, but it will ensure no further compression losses if you edit or transcode again.

Need to extract audio from a video before converting?Extract audio from MP4, MOV, or other formats first, then convert to FLAC here.

M4A vs FLAC: what's the difference?

Property	M4A	FLAC
Extension	.m4a	.flac
Type	AAC or ALAC audio in MPEG-4	Free Lossless Audio Codec
Compression	Lossy (AAC) or lossless (ALAC)	Lossless only
Typical size (4 min)	7–30 MB	25–35 MB
Quality	Depends: lossy or lossless	Always lossless, matches input
Device support	Apple-first, some Android/Windows	Most music players, editors, all OS

M4A is an audio file format used by Apple devices, usually holding AAC (compressed) or ALAC (lossless) audio. FLAC is an open, lossless audio format used for archiving and editing with no quality loss.

Does converting M4A to FLAC change audio quality?

No, not if your M4A was already lossless (ALAC). The preset encodes the audio to FLAC using a lossless algorithm. If your M4A is lossy (AAC), the FLAC will sound the same as the original, but cannot restore quality lost during the first compression. There is no bitrate or quality slider, since FLAC always preserves the input exactly.

The main trade-off is file size. FLAC files are larger than AAC M4A files—expect a 4-minute song to jump from about 7 MB (AAC) to 25–35 MB (FLAC). If you are archiving, editing, or sharing with audio professionals, this is the right format. If you just want to save space, stick with AAC or MP3 instead.

Are there built-in ways to convert M4A to FLAC?

Windows and macOS do not include a built-in M4A to FLAC converter. iTunes and Music.app can export M4A as ALAC, but not FLAC. VLC can play both formats and convert M4A to FLAC, but the process is clunky compared to a dedicated tool. Audacity can import M4A (with FFmpeg installed) and export as FLAC, but it requires extra setup. On Android, some file managers can play both, but do not convert.

Videozify runs entirely in your browser—no install, no upload, no FFmpeg setup. For one-off or batch conversions, it's simpler than desktop apps. If you are already using Audacity or VLC for editing or playback, you can use their export features, but most people find browser tools faster for basic format changes.

Frequently asked questions

Does converting M4A to FLAC improve sound quality?: No. If your M4A uses AAC (lossy), converting to FLAC preserves the current quality but cannot restore details lost in compression. If your M4A is already lossless (ALAC), converting to FLAC keeps the same audio data—no loss, no gain. FLAC is best for archiving or editing, not for making lossy files sound better.
Will FLAC files play on my phone or music player?: Most Android phones, Windows PCs, and many modern music players support FLAC. iPhones and iPads do not play FLAC in the default Music app, but third-party apps (like VLC or Vox) can. Car stereos and smart speakers vary—check your device’s specs before converting a big library.
How much bigger is a FLAC file compared to M4A?: A typical 4-minute song in AAC M4A (256 kbps) is about 7–8 MB. The same track as FLAC will be about 25–35 MB. If your M4A was already lossless (ALAC), the FLAC will be a similar size. FLAC is designed for quality, not for size savings.
Can I convert M4A to FLAC without losing metadata?: Yes, most tags like title, artist, and album are kept during conversion. However, some less common metadata (like embedded images or Apple-specific tags) may not transfer perfectly. Always check the FLAC file after conversion if metadata is important for your workflow.
What if my M4A won’t open in the converter?: Some M4A files with unusual codecs or DRM (copy protection) cannot be converted. Most iPhone and iTunes M4A files work. If you see an error, try playing the file in VLC or converting to WAV first using a different tool, then convert WAV to FLAC.
Is FLAC better than ALAC for archiving?: Technically, both are lossless and sound identical. FLAC is open, widely supported, and easier to use on non-Apple devices and with open-source tools. ALAC (in M4A) is mainly for the Apple ecosystem. For long-term storage or sharing, FLAC is the safer bet.
Can I use this tool on my phone or tablet?: Yes. Videozify runs in Chrome, Safari, or Firefox on iOS and Android. Large files (over 200 MB) may be slow or hit device memory limits. For big conversions, a desktop browser is more stable. No files are uploaded, and everything runs locally.
Are there free desktop alternatives to convert M4A to FLAC?: Yes. VLC (Windows/Mac/Linux) can convert M4A to FLAC: use Media > Convert/Save. Audacity (with FFmpeg) can import M4A and export FLAC. Both require installation and some setup. macOS Music.app and iTunes can convert to ALAC but not FLAC.