How do I convert WAV to M4A?

Upload your WAV file using the box above, confirm M4A as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting WAV to M4A free?

Yes, and there is nothing to sign up for. Every conversion route is free on every plan — paying raises limits such as file size and how many conversions you get, and removes advertising. It never unlocks a format, adds a watermark or degrades the output.

Will the quality change when converting to M4A?

M4A uses lossy compression, so some data is discarded to keep the file small. The default quality setting is tuned to be visually or audibly transparent for most material, and you can raise it in the conversion settings.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

wavm4a

Convert WAV to M4A

Free online converter for WAV files. AAC audio in an MP4 container. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a WAV file to convert it to M4A. Up to 3 files at once, 100 MB each.

Free · up to 3 files · 100 MB each · files deleted automatically after 1 hour.

About WAV and M4A

WAV .wav

Raw uncompressed audio samples in a thin container. Exactly what came off the recorder, at roughly 10 MB per minute of stereo CD-quality sound.

Good for

Bit-for-bit perfect — nothing is discarded
No decoding overhead, so editors handle it fastest
The standard working format for recording and editing

Trade-offs

Very large — around 10 MB per minute
No built-in tags for artist or album
Impractical for distribution or streaming

audio/wav

M4A .m4a

An MPEG-4 container holding audio only — usually AAC, sometimes lossless ALAC. The extension tells you the wrapper, not the contents.

Good for

Rich tagging, including chapters and artwork
Holds either lossy AAC or lossless ALAC
The standard for iTunes and Apple Music files

Trade-offs

The extension alone does not tell you the quality inside
Support outside Apple platforms is inconsistent

audio/mp4

WAV and M4A side by side

WAV compared with M4A
	WAV	M4A
Compression	Uncompressed PCM	Container — usually lossy AAC
Typically used for	Recording, editing, mastering	Apple audio, audiobooks, podcasts

What changes when you convert WAV to M4A

This is a re-encode, not a repackage

Some tools can move a stream into a different container untouched when the codecs happen to line up. We do not — every job here is decoded and encoded again, so the conversion takes time in proportion to the length of the file and costs a small amount of quality even where a repackage would have been possible. In exchange the output is predictable: it plays everywhere, rather than inheriting whatever the source happened to contain.

What your M4A will contain

The output is AAC — the same codec a bare .aac file holds, wrapped in an MP4 container so that artwork and tags have somewhere to live.

This step is irreversible

WAV holds every sample; M4A keeps a close approximation. The file gets dramatically smaller, and converting back later will not undo it. Keep the WAV original if it is a master you will work from again.

Tags may not survive intact

WAV stores its metadata as RIFF INFO chunks, which many players ignore entirely, and M4A uses MP4 atoms. Standard fields such as title, artist and album normally map across. Anything without an equivalent on the other side — unusual custom fields, some ratings and play counts, occasionally embedded artwork — has nowhere to go. Check the tags before deleting the original if your library depends on them.

Other WAV conversions

Other ways to get M4A

Worth reading next

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