Why convert WAV to M4A?
WAV stores uncompressed audio at roughly 10 MB per minute at CD quality, making files impractical to share or store on a phone. Converting to .M4A cuts that size by 5-10× while keeping quality high enough for everyday listening. M4A is natively supported on iPhones, iPads, and all Apple platforms, and plays back fine on Android and Windows too.
How to convert WAV to M4A
macOS Music app BUILT-IN
Set Import Settings to AAC Encoder in Music, drag in your WAV, then choose File > Convert > Create AAC Version.
VLC FREE
Use Media > Convert/Save, pick an AAC profile, set the output extension to .m4a, and click Start.
fre:ac OPEN-SOURCE
Add your WAV to fre:ac, select the AAC encoder, and export as M4A in one click.
Command line - ffmpeg CLI
Run ffmpeg -i input.wav -c:a aac -b:a 192k output.m4a - raise -b:a to 256k for higher quality or lower it to 128k for smaller files.
Programs that convert WAV
About these formats
A WAV file is an uncompressed digital audio file introduced by Microsoft and IBM in 1991. Double-click one and it plays in Windows Media Player, macOS Music/QuickTime, or VLC on any system.…
Open .WAV details →An M4A file is an MPEG-4 audio file - the audio-only version of an MP4, usually containing AAC (lossy) or ALAC (Apple Lossless) audio. It plays natively on Windows 11, macOS, iPhone, and…
Open .M4A details →Quality & what to watch
- Conversion is lossy: AAC discards audio data, so keep the original
WAVif you need it for further editing. - 192 kbps AAC is indistinguishable from the source for most listeners; 128 kbps suits voice recordings, 256 kbps suits critical music listening.
M4Asupports embedded metadata (title, artist, album art) better thanWAVdoes, so the converted file is easier to tag and organise.
Frequently asked questions
Does converting WAV to M4A reduce quality?
Can I convert M4A back to WAV?
M4A to WAV, but quality lost during the original compression cannot be recovered - the result will be uncompressed but not identical to the source.What bitrate should I use?
Does M4A play on Windows?
M4A files without extra codecs.