Convert WAV to AAC Online
WAV files are huge and impractical for mobile storage. Converting to AAC reduces file size by 90% while maintaining excellent audio quality on Apple devices.
Our converter handles all WAV files and produces AAC output optimized for Apple devices, iTunes, and streaming platforms.
WAV is large and uncompressed; AAC is the efficient lossy codec Apple and streaming services use. Converting WAV to AAC shrinks the file dramatically while keeping quality that is hard to distinguish from the source. This guide covers the bitrate to choose, how AAC compares to MP3, and how to convert in the browser.
What is WAV?
WAV is an uncompressed audio format that stores raw audio data. A 4-minute song at CD quality takes approximately 40MB as WAV.
WAV offers perfect audio quality but impractical file sizes for everyday use on mobile devices and online sharing.
What is AAC?
AAC is Apple's preferred compressed audio format used by iTunes, Apple Music, and all iOS devices. It offers excellent quality at small file sizes.
At 256kbps, AAC files are about 90% smaller than equivalent WAV files while maintaining audio quality indistinguishable from the original for most listeners.
What Bitrate Should You Use?
AAC is efficient, so modest bitrates sound excellent. Choose by purpose:
| Use case | AAC bitrate | Notes |
|---|---|---|
| Voice, podcasts, audiobooks | 96 kbps | Clear speech at a small size |
| General music | 192 kbps | Transparent for most listeners and gear |
| High-quality music | 256 kbps | Apple Music's tier; effectively indistinguishable from source |
| Maximum AAC quality | 320 kbps | Diminishing returns above this |
Keep the original WAV as your master, because AAC is lossy and cannot be reversed back to full quality.
AAC vs MP3
At the same bitrate, AAC generally sounds better than MP3, especially on stereo and complex music, which is why Apple, YouTube, and most streaming platforms standardized on it. MP3 keeps an edge only in compatibility with very old or cheap hardware. If your target is an iPhone, a modern car system, or a streaming workflow, AAC is the better choice; pick MP3 only when you need a device that predates wide AAC support.
Why Convert WAV to AAC?
Tiny File Size
AAC files are 90% smaller than WAV - a 40MB WAV becomes a 4MB AAC file.
Apple Native
AAC is the native format for all Apple devices, iTunes, and Apple Music.
Streaming Quality
256kbps AAC is the standard for Apple Music streaming and downloads.
Easy Sharing
Small AAC files can be easily emailed, uploaded, and shared without file size restrictions.
How to Convert WAV to AAC
Upload WAV
Select your WAV file. Large WAV files may take time to upload.
Select AAC output
Choose AAC and select 256kbps for music or 128kbps for speech.
Convert
Click convert to compress your WAV to AAC format.
Download AAC
Save your compact AAC file for your Apple devices.
Convert in the Browser, No Upload
The FileFormer audio converter encodes WAV to AAC at your chosen bitrate directly in your browser. Because it runs on your device, the audio is never uploaded to a server.
Ready to Convert WAV to AAC?
Use our free online converter. No signup, no watermarks, practical limits.
Convert WAV to AACPro Tips
Use 256kbps for music
256kbps AAC is the Apple Music standard - perfect for music you care about.
Keep WAV originals
Always keep original WAV files for professional use or future re-conversion.
Great for podcasts
128kbps AAC is perfect for podcast episodes and spoken word content.
Frequently Asked Questions
How much smaller will AAC be than WAV?
AAC at 256kbps is approximately 90% smaller than equivalent WAV files.
Will WAV to AAC reduce quality?
Yes, AAC is lossy. However, at 256kbps the difference is inaudible to most listeners.
Can I play AAC on Windows?
Yes, Windows 10 and later support AAC natively. Older Windows versions may need iTunes or VLC.
Is AAC good for voice recording?
Yes, 128kbps AAC is excellent for voice recording and podcasts.
What software opens AAC files?
iTunes, Windows Media Player (Windows 10+), VLC, and virtually all modern media players support AAC.
Is AAC better than MP3?
At the same bitrate, AAC generally sounds better than MP3 and is the standard for Apple devices and streaming. MP3 only wins on compatibility with older hardware. For modern playback, AAC is the stronger choice.
Will WAV to AAC lose quality?
AAC is lossy, so some data is discarded, but at 192-256 kbps the result is transparent to most listeners. Keep the WAV master if you may need to re-encode to other formats later.