M4A Converter

Convert M4A to Any Audio Format

M4A is Apple's default audio file — it is what iTunes, the iTunes Store, Apple Music downloads, and the Voice Memos app produce. The .m4a extension is an MPEG-4 Part 14 container (the same family as MP4) that holds AAC audio in almost every case, or ALAC when the file is lossless. AAC packs better sound into a smaller file than MP3 at the same bitrate, which is exactly why Apple chose it. The catch is reach: plenty of older MP3 players, factory car stereos, gym equipment, PowerPoint, and budget Bluetooth speakers still only read MP3. This converter takes any M4A and re-encodes it to MP3, WAV, OGG, FLAC, AAC, or Opus — files are processed on our servers, no sign-up, no watermark, batch friendly. The most common reason people land here is M4A to MP3 for universal playback, which is why MP3 is the default output below.

How to Convert M4A to Another Format

1. Upload your M4A: Drag and drop the file onto the page or click "+ Add Files". You can queue several M4A files at once for batch conversion, and .m4b audiobook files are accepted too.
2. Pick the output under "Audio File Extension": The dropdown defaults to MP3 for maximum compatibility. Switch it to WAV, OGG, FLAC, AAC, Opus, AIFF, WMA, AU, or AMR depending on where the file needs to play.
3. Tune quality (optional): Open Advanced Options to expand "File Compression". Choose a Quality Preset (Highest down to Lowest), or set an exact bitrate with Constant Bitrate (e.g. 128 / 192 / 256 / 320 kbps), Variable Bitrate (a range such as 190–250 kbps), or Custom Bitrate. You can also target a Specific file size, override the Audio Sample Rate (8 kHz–48 kHz), set the Audio Channel to Original, Mono, or Stereo, pick a raw stream under Audio Codec, or use Trim (Start time + Duration) to keep just one section.
4. Convert and download: Click Convert. Files process on our servers and are not stored long-term. Download each result on its own or grab everything as a ZIP.

Popular M4A Conversions

• M4A to MP3 — universal compatibility for any player, car stereo, or app (the default)
• M4A to WAV — uncompressed PCM for editing in a DAW without compounding artifacts
• M4A to OGG — royalty-free Vorbis for games, Spotify's standard tier, and open-source apps
• M4A to FLAC — lossless compression with full metadata for archiving (best from an ALAC source)
• M4A to AAC — pull the raw AAC stream out of the MP4 container into a bare .aac file
• M4A to Opus — the smallest file at low bitrates for voice notes and streaming

M4A Output Formats Compared

The right target depends on whether you care about compatibility, file size, or keeping every bit of the original. Note that M4A → MP3, OGG, AAC, or Opus is a lossy-to-lossy transcode: the source AAC already discarded data, and a second lossy pass discards a little more, so the result is never better than the M4A even at a higher bitrate. Converting to WAV or FLAC re-expands the audio but cannot recover what AAC already removed.

M4A-AAC vs M4A-ALAC — Know Which One You Have

Two very different files share the .m4a extension, and it changes what conversion makes sense:

• M4A with AAC (lossy): The default for Apple Music, iTunes Store purchases, YouTube rips, and phone recordings. AAC is the codec the MPEG group designed as MP3's successor; at 128 kbps stereo it is generally rated "transparent" and sounds noticeably cleaner than MP3 at the same bitrate. Converting this to FLAC or WAV will not restore lost detail — you only get a bigger file holding the same lossy audio.
• M4A with ALAC (lossless): The Apple Lossless Audio Codec, used by Apple Music's Lossless tier and by people who rip CDs in iTunes. ALAC is bit-for-bit identical to the source, typically compressing to 40–60% of the uncompressed size, and Apple open-sourced it under the Apache 2.0 license in October 2011, so it is royalty-free. An ALAC .m4a is a true master — converting it to FLAC keeps it lossless and portable, while converting it to MP3 trades quality for compatibility.

If you are unsure which you have, file size is the giveaway: a 4-minute ALAC track is usually 20–40 MB, while a 4-minute AAC track at 256 kbps is roughly 7–8 MB.

Frequently Asked Questions

Is M4A the same as MP4?

They share the MPEG-4 Part 14 container, so technically an .m4a is an MP4 file that contains only audio. Apple uses the .m4a extension to signal "audio-only" so the operating system opens it in a music player instead of a video player. Under the hood the audio is almost always AAC, or ALAC when the file is lossless. Renaming an .m4a to .mp4 usually still plays, but it is cleaner to convert properly than to rely on the extension swap.

Will I lose quality converting M4A to MP3?

A little, but usually not enough to hear. M4A (AAC) and MP3 are both lossy, so going from one to the other is a second compression pass — data the AAC encoder already discarded stays gone, and the MP3 encoder removes a bit more. In practice, at 192 kbps or higher the difference is hard to notice on typical playback gear. The rule is to set the MP3 bitrate at or above the source bitrate so you do not compound the loss; choosing a higher MP3 bitrate than the original will not add quality back, it only avoids losing more.

Should I convert M4A to FLAC or WAV to get a lossless copy?

Only if your M4A is already ALAC (lossless). Converting a lossy AAC .m4a to FLAC or WAV re-expands the audio into a lossless wrapper, but it preserves the lossy audio exactly as-is — you end up with a much larger file that sounds identical to the M4A, not a recovered master. If the source is ALAC, FLAC is the better archive target: it is also lossless, compresses to roughly half of WAV, and stores artist, album, and cover-art tags that WAV's RIFF container does not support natively.

Why won't my car stereo or old MP3 player read M4A files?

AAC and the MP4/M4A container arrived after MP3 became the universal standard, and many older or budget devices only ever implemented MP3 (and sometimes WMA). Factory car head units, gym cardio machines, older iPod Shuffle/Nano-era hardware, and some Bluetooth speakers fall into this group. Converting the M4A to MP3 at 256 kbps CBR is the safe fix — it plays everywhere and the quality loss from a single careful transcode is minimal.

Can I extract the raw AAC from an M4A without re-encoding?

Yes — choose AAC as the output and the converter can copy the existing AAC stream out of the MP4 container into a bare .aac (ADTS) file rather than re-encoding it, as long as you do not force a different bitrate or sample rate. That keeps the audio bit-identical to what was inside the M4A. The trade-off is that a raw ADTS stream carries no cover art and only limited tags, so most people keep AAC inside an M4A container unless a specific tool requires the bare stream.

How do I batch convert a whole iTunes or Voice Memos library?

Add multiple .m4a files in one go — drag the selection onto the page or pick them all in the file dialog. Each file converts with the same output format and Advanced Options you set, and you can download them individually or as a single ZIP. For very large libraries, converting in batches of a few dozen keeps the browser session responsive. If you also need to shrink long recordings to fit an email or chat limit, the Audio Compressor targets an output size directly, and the Audio Cutter trims clips to a time range before export.

Do I need to convert M4A from a video file, like an MP4?

No — this tool is for .m4a audio files. If your audio is still inside a video container, use a dedicated extractor such as MP4 to MP3 to demux and re-encode the audio stream. When the video already uses AAC (most phone recordings do), extracting to M4A is the fastest, highest-quality path because the AAC stream can be copied without a re-encode.