Does converting MP3 to WAV improve quality?

No — WAV is lossless, but it can only preserve what's in the MP3. Anything the MP3 already discarded is gone. WAV simply gives you an uncompressed file editors and hardware accept.

Why would I want a bigger file?

Uncompressed WAV is the format many editors, CD tools, and samplers require. The larger size is the trade-off for a format those tools can work with directly.

Can I convert a batch?

Yes — add a folder and Spark Tray converts every MP3 to WAV locally in one run.

MP3 → WAV

MP3WAV

MP3 to WAV Converter

Decode MP3 files to uncompressed WAV on your Windows PC — the format editing software and hardware expect. One file or a batch, converted locally with nothing uploaded. Free.

Windows 10/11 (x64) · Free · No account

Drop in your files — Uncompressed WAV output — batch a folder at once.

Why convert

Why convert MP3 to WAV?

Many audio editors, DAWs, CD-authoring tools, and pieces of hardware want an uncompressed WAV. Decoding MP3 to WAV gives you a file those tools accept and can process without re-decoding on the fly.

Prepare audio for a DAW or editor that expects WAV.
Author an audio CD, which requires uncompressed PCM.
Feed samplers or hardware that only read WAV.
Batch-convert a folder of MP3s for a project.

How it works

Convert MP3 to WAV in a few clicks

1
Add your files
Drop in one MP3 or a whole folder.
2
Pick WAV
Select uncompressed WAV output.
3
Convert
ffmpeg decodes each MP3 to WAV on your PC.
4
Done
Your WAV files are saved where you choose.

The details

MP3 to WAV, at a glance

Input format: MP3
Output format: WAV (uncompressed PCM)
Note: WAV can't restore detail MP3 already discarded
Batch: Convert a whole folder in one pass
Processed: Locally with ffmpeg — nothing uploaded

Questions