WAV to AAC Converter
Convert WAV to AAC free — no upload, no signup
To convert WAV to AAC, drop your WAV audio files into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. AAC gives smaller files than MP3 at the same quality.
Drop audio files here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Advanced
How to convert WAV to AAC
Add your WAV files
Drag and drop WAV files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Pick a bitrate
192 kbps suits music and 128 kbps or less suits speech. Sample rate and mono/stereo are under Advanced.
Convert and download
Click Convert, then download each AAC file or all of them as one ZIP.
Why convert WAV to AAC?
Broadcast tools, streaming encoders and Android apps often accept raw AAC.
What happens when you convert WAV to AAC?
The WAV is encoded to AAC at 160 kbps by default, around 90% smaller.
How does Fylo convert WAV to AAC?
Fylo decodes the PCM audio in the WAV with ffmpeg compiled to WebAssembly and encodes it with FFmpeg's AAC encoder at 160 kbps, written as a raw ADTS stream. Going from lossless to lossy is where the big saving happens: a 3-minute song is ≈ 32 MB as WAV but ≈ 3.6 MB at 160 kbps as AAC. The original sample rate and channel layout are kept unless you change them under Advanced.
What's the difference between WAV and AAC?
WAV was introduced by Microsoft and IBM in 1991 and, like AVI, uses the RIFF container. Most WAVs hold uncompressed PCM audio: CD quality (44.1 kHz, 16-bit, stereo) runs at 1,411 kbps, or about 10.6 MB per minute.
AAC (Advanced Audio Coding) was standardised in 1997 as part of MPEG-2 and later MPEG-4, designed to replace MP3. It achieves better quality at the same bitrate, especially below 128 kbps. A .aac file is usually a raw ADTS stream; the same audio inside an MP4 container is called M4A.
Learn more: WAV format guide · AAC format guide
| Property | WAV | AAC |
|---|---|---|
| Compression | None (PCM) | Lossy |
| Typical bitrate | 1,411 kbps (CD quality) | 96–256 kbps |
| 3-minute song | ≈ 32 MB | ≈ 3.6 MB at 160 kbps |
| Tags and cover art | Limited | Limited in raw .aac (full in M4A) |
| Compatibility | Universal on computers; editors and DAWs | Very wide: Apple, Android, YouTube, browsers |
| Best for | Recording, editing, mastering | Efficient music and video soundtracks |
| Introduced | 1991 | 1997 |
Frequently asked questions
Raw AAC or M4A?
M4A is better for music libraries because it supports tags.
Is 160 kbps enough?
Yes, AAC at 160 kbps is transparent for most music.
Is my WAV file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your WAV file is read directly from your device and never sent anywhere.
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