Convert WAV to AAC Online — No Upload, No Watermark
AAC is the modern lossy format that beats MP3 in quality at the same bitrate — used by YouTube, Apple Music, and almost every streaming service.
Drop audio file here
Max file size: ~2 GB (memory permitting)
Where WAV files come from
AAC is the target when audio is heading into video, into an Apple ecosystem, or anywhere bitrate is tight, since it outperforms MP3 at the same size.
What changes when you convert WAV to AAC
| Encoding | PCM encoded to AAC at 192 kbps |
|---|---|
| File size | Roughly one tenth of the WAV |
| Use | The audio codec MP4 and MOV expect |
Worth knowing first
AAC beats MP3 most clearly at low bitrates, below about 128 kbps. At the 192 kbps used here both are transparent, so choose AAC for compatibility with video containers and Apple devices rather than expecting an audible gain.
FAQ
AAC or MP3?
AAC when the audio is going into a video file or an Apple device, and when bitrate is constrained. MP3 when the destination is old hardware. At 192 kbps you will not hear a difference between them.
Why does video use AAC?
Because MP4 standardised on it. Practically every H.264 video you encounter carries AAC audio, which is why an audio track destined for video should be AAC from the start.
Will this play everywhere?
On anything made in roughly the last fifteen years, yes. Very old car stereos and MP3 players are the exception, and MP3 is the safer choice for those.
Is this WAV to AAC converter free, with no upload?
Yes. Conversion happens locally in your browser via FFmpeg WebAssembly — your audio never uploads. No signup and no watermark. Length is limited only by the memory your browser gives this tab, which is far smaller on a phone than on a computer.