WAV to M4A converter
Save heavy WAV recordings as compact M4A (AAC) that plays natively on iPhones, Macs, and most modern players. Conversion happens in your browser — the file never touches a server.
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A WAV file is the raw, uncompressed master your DAW or a Suno download hands you — every sample stored at full resolution, which is why a couple of minutes of stereo audio swells to 20–30 MB. M4A wraps AAC, a perceptual codec that models what the ear actually hears and drops the rest, so the same-sounding track fits into a fraction of the space. This tool re-encodes your WAV to AAC at 192 kbps and packages it as an .m4a right on your device, with no upload step in between.
Reach for a WAV-to-M4A conversion whenever the raw file is too big to email, upload, or sync but you still want clean, full-quality playback — 192 kbps AAC stays transparent to most ears on phones and earbuds. Because the .m4a can be roughly a tenth of the WAV's size, it's the practical choice for sending demos, freeing up phone storage, or getting past a platform's file-size cap. Keep the WAV as your editing master and use the M4A as the lightweight copy you actually hand out.
How it works
- 1
Drop your WAV file.
- 2
Click convert.
- 3
Download the M4A.
When to use it
- Bouncing a finished song out of Suno or a DAW as WAV, then shrinking it to M4A so it slips under the file-size cap on a Discord DM or a Gmail attachment.
- Loading a batch of tracks onto an iPhone through the Music app, which plays M4A/AAC natively without re-transcoding them on import.
- Compressing a folder of WAV voice takes or field recordings to M4A before backing them up to iCloud Drive or Google Drive to reclaim storage.
WAV vs M4A (AAC)
| WAV | M4A (AAC) | |
|---|---|---|
| Lossless | Yes | No |
| Typical size | Large (uncompressed) | Small (efficient) |
| Best for | Editing, DAWs, mastering | Apple devices & modern players |
| Compatibility | All editors & players | Apple ecosystem, most players |
FAQ
Is M4A the same as Apple Lossless (ALAC)?
No — this outputs AAC, a lossy codec, inside an .m4a container. AAC at 192 kbps is transparent for most listeners, but keep your WAV as the master if you need true lossless.
Why pick M4A over MP3?
At the same bitrate AAC is slightly more efficient than MP3 and it's the native audio format across Apple devices. Choose MP3 only when you need maximum compatibility with older hardware.
How much smaller will the M4A be than my original WAV?
A lot smaller. A 3-minute stereo WAV runs around 30 MB, while the same track at 192 kbps AAC lands near 4 MB — roughly a tenth of the size. WAV stores every sample uncompressed, whereas AAC discards audio detail your ears don't register, which is where nearly all the savings come from.
Can I choose the AAC bitrate, or is it fixed at 192 kbps?
This tool encodes at a fixed 192 kbps AAC, a setting that's transparent to most listeners for both music and speech, so there's nothing to configure. If you specifically need a lower bitrate to hit a size target or a higher one for archiving, encode from a lossless source in a converter that exposes bitrate options rather than re-encoding this output.
My WAV is 24-bit or 32-bit float — will it still convert?
Yes. The encoder reads high-bit-depth masters (24-bit, or 32-bit float exported from many DAWs) without complaint and re-encodes them to AAC. The extra bit depth simply isn't carried into the lossy AAC output, which is expected — keep the original WAV if you still need the full precision for further editing or mastering.
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