FLAC to M4A Converter – Free Online

How to Convert FLAC to M4A Online

Drop your FLAC file

Drag and drop your .flac file onto the box above, or click Choose Files. The request is already filled in: “Convert this to M4A”.

Say how, if you want

The AI assistant uses sensible defaults. To choose the bitrate, codec or sample rate yourself, say so in the request, for example “Convert this to M4A at 320 kbps”.

Save your M4A file

The assistant opens with your file and converts it on your own device; the file itself is never uploaded. When the M4A file is ready, click Save. Prefer to set everything by hand, or batch-convert several files into a ZIP? The classic converter is one click away on this page.

Why Convert FLAC to M4A?

Apple Music, and iTunes on Windows, will not import FLAC files, which leaves lossless downloads and CD rips stranded outside an Apple library. Converting FLAC to M4A with the ALAC codec keeps the music lossless in a format Apple's apps import, sync and play natively.

The AI assistant writes AAC unless you ask for ALAC (“Convert this to M4A with ALAC”). If space on your iPhone matters more than a lossless copy, AAC at around 256 kbps is the rate Apple uses for iTunes Store downloads; in the classic converter the bitrate slider sets it as a percentage of the FLAC's own, so around 30% of a typical CD-quality FLAC lands near 256 kbps.

Private by design: your FLAC file is converted on your own device and never uploaded.
M4A already asked for: the AI assistant's request says M4A, so one drop does it. Want a particular bitrate, codec or sample rate? Just say so.
Batch friendly: the classic converter on this page takes several FLAC files in one go and downloads them as a ZIP.
Free, no watermark: no sign-up, and nothing stamped on the output.

FLAC vs M4A

FLAC (Free Lossless Audio Codec): FLAC (Free Lossless Audio Codec) compresses audio to roughly half the size of WAV without discarding a single bit, so it decodes back to the identical original. It is best for lossless music libraries and audiophile listening.

M4A (MPEG-4 Audio): M4A is audio-only MP4, normally holding AAC (or lossless ALAC). It is the native format of iTunes, Apple Music and iPhone Voice Memos and sounds better than MP3 at the same bitrate. It is best for Apple devices, iTunes and voice memos.

In short: keep FLAC when the priority is lossless music libraries and audiophile listening, and switch to M4A when the file is headed for Apple devices, iTunes and voice memos. Need a different target? The full Audio Converter supports every format listed below.

FLAC to M4A FAQ

ALAC or AAC: which should I choose?

ALAC for a lossless file roughly the size of the FLAC; AAC for a file around a third of that size or smaller, which still sounds excellent on phones and earbuds.

Do hi-res FLAC files keep their sample rate?

With ALAC, yes: lossless codecs keep rates up to 192 kHz, so a 96 kHz FLAC stays 96 kHz. AAC tops out at 48 kHz here, so hi-res sources are resampled when you pick it.

Is this FLAC to M4A converter free?

Yes. Converting FLAC to M4A on MediaConverter.io is free, with no watermark and no sign-up. The AI assistant runs on a free daily allowance of assistant credits; the classic converter on this page has no daily limit at all.

Are my FLAC files uploaded to a server?

No. The conversion runs inside your browser using FFmpeg compiled to WebAssembly, so your .flac file is read and converted on your own device and never uploaded, which keeps private recordings private and means there is no waiting in an upload queue. The AI assistant only sees what you type and basic facts about the file: its name, format, duration and size.

Is there a file size limit for FLAC to M4A?

There is no plan or account limit, but the converter loads the whole FLAC file into your browser's memory, so about 2 GB per file is the practical ceiling; larger files may fail to open. Long or high-resolution files also take longer, especially on phones.

Can I choose the M4A settings myself?

Yes. Ask the AI assistant for a bitrate, codec or sample rate in your request. Audio track selection and every other setting are in the classic converter, one click away on this page.

Will converting FLAC to M4A reduce quality?

M4A is a lossy format, so the FLAC audio is decoded and re-encoded. Keep the bitrate at 100% (or pick 256 to 320 kbps) and the difference is inaudible for almost all listeners.

Which browsers support the FLAC to M4A converter?

It is built and tested on current desktop Chrome and Edge. The conversion itself runs in WebAssembly, which every current desktop browser supports, so speed depends mostly on your computer's processor.