AAC vs WAV: Which Should You Use?

Side-by-side comparison of AAC and WAV audio formats — features, pros, cons, and conversion options.

Quick Answer

AAC is best for Streaming and mobile audio playback. WAV is best for Professional audio editing and recording.

Quick Verdict

AAC Best for Streaming and mobile audio playback

✓ Excellent sound quality at low bitrates
✓ Wide device support
✓ Efficient compression
✗ Lossy compression

Convert AAC to WAV →

WAV Best for Professional audio editing and recording

✓ Uncompressed lossless quality
✓ Universal compatibility
✓ No decoding overhead
✗ Very large file size

Convert WAV to AAC →

Specs Comparison

Side-by-side technical comparison of AAC and WAV

Feature	AAC	WAV
Category	Audio	Audio
Year Introduced	1997	1991
MIME Type	audio/aac	audio/wav
Extensions	.aac	.wav
Lossy	✓	✗
Codec	Advanced Audio Coding	PCM (uncompressed)
Max Bitrate	512 kbps	unlimited (lossless)
Max Sample Rate	96 kHz	4 GHz (theoretical)
Channels	7.1 surround	65,535 channels
Streaming	✓	✗

Pros & Cons

AAC

Pros

✓ Excellent sound quality at low bitrates
✓ Wide device support
✓ Efficient compression

Cons

✗ Lossy compression
✗ Not as universally supported as MP3
✗ Patent-encumbered

WAV

Pros

✓ Uncompressed lossless quality
✓ Universal compatibility
✓ No decoding overhead

Cons

✗ Very large file size
✗ No built-in metadata tags
✗ Wasteful for distribution

When to Use Each

Choose AAC when...

You need files optimized for Streaming and mobile audio playback
Excellent sound quality at low bitrates
Wide device support

Choose WAV when...

You need files optimized for Professional audio editing and recording
Uncompressed lossless quality
Universal compatibility

How to Convert

Convert between AAC and WAV for free on ChangeThisFile

Convert AAC to WAV Server-side conversion — auto-deleted after processing Convert WAV to AAC Server-side conversion — auto-deleted after processing

Frequently Asked Questions

What's the difference between AAC and WAV?

AAC is best for Streaming and mobile audio playback, while WAV is best for Professional audio editing and recording. Both are audio formats but they differ in compression, compatibility, and intended use cases.

Is AAC or WAV better for audio?

It depends on your use case. AAC is better for Streaming and mobile audio playback. WAV is better for Professional audio editing and recording. Consider your specific requirements when choosing between them.

How do I convert AAC to WAV?

Go to the AAC to WAV converter on ChangeThisFile. Upload your file and the conversion processes on the server, then auto-deletes. It's free with no signup required.

Can I convert WAV to AAC?

Yes. ChangeThisFile supports WAV to AAC conversion. Upload your file for server-side conversion — files are auto-deleted after processing.

Which is smaller, AAC or WAV?

File size depends on the content and compression settings. AAC uses lossy compression for smaller files. WAV preserves full quality. For the smallest files, choose the format with lossy compression that meets your quality needs.

Does AAC support lossy?

Yes, AAC supports lossy, but WAV does not. This may be important depending on your use case.

Is AAC or WAV free to use?

Both AAC and WAV are supported file formats that are free to use. You can convert between them for free on ChangeThisFile — server-side conversions are free with no signup required.

Which format is newer, AAC or WAV?

AAC is newer — it was introduced in 1997, while WAV dates back to 1991. Newer formats often offer better compression and features, but older formats tend to have wider compatibility.