Convert WAV to AAC.
Shrink an uncompressed WAV into AAC audio for phones, Apple devices and apps that expect AAC.
From master to delivery
WAV is what recorders and DAWs export. It is far too large to send around. AAC keeps the sound close to the original at a fraction of the size.
Surround stays surround
A multichannel WAV keeps its channels, so a 5.1 mix stays 5.1. The bitrate rises with the channel count to match.
Size change
A stereo WAV at 44.1 kHz shrinks by roughly ten times, from about 10 MB a minute to about 1 MB.
How it works
- 01
Upload your WAV
Drop a file or pick one from your device. Private by default.
- 02
Encode with ffmpeg
ffmpeg encodes the WAV as AAC at about 128 kbps for stereo, at the original sample rate.
- 03
Download
Grab your AAC.
About 128 kbps AAC for stereo
Keeps the original sample rate and channels
Private uploads, auto-deleted after 1 hour
No watermark, no signup to try
Open-source ffmpeg engine
WAV to AAC: re-encoded
AAC is a compressed, lossy audio format, so this re-encodes the sound and the file gets smaller. Every lossy re-encode sheds a little quality, so convert from the best source you have rather than chaining conversions.
Need more than a conversion?
Send your audio or video to TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items: automatically.
Common questions
Is it free?+
Yes. Convert WAV to AAC free. No signup and no watermark. Free covers 10 server conversions a day, up to 100 MB a file. Pro removes the daily limit and raises the file limit to 2 GB.
Is my file private?+
Your file is uploaded to a private bucket, converted on our own engine, and auto-deleted after 1 hour. It is never sent to a third-party converter.
AAC or M4A?+
A .aac file is raw AAC audio with no room for tags or cover art. An .m4a is AAC inside an MP4 container. Most Apple apps prefer M4A, and WAV to M4A gives you that.
How much quality is lost?+
AAC is lossy, so some detail is removed. At about 128 kbps for stereo it sounds close to the original for everyday listening. Keep the WAV as your master.
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