Does converting MP3 to WAV restore lost quality?

No. The WAV will be more compatible, but it cannot bring back what MP3 compression already removed.

What is it good for then?

It imports better into DAWs, editors and tools that expect WAV.

Yes, though it is always better to master from the original WAV if you have it.

Online audio tool

Turn an MP3 into WAV to work with a more compatible format in editors, DAWs and production workflows.

Target search: convert mp3 to wav

Upload your MP3.

Nivelab decodes it in your browser.

Check the result before downloading.

Export a WAV ready for editing.