Convert compressed MP3 audio into WAV, the uncompressed format that audio editing and transcription software generally prefers as an input.
Converting does not restore detail that MP3 compression already discarded — it decodes what is there into a format that will not lose anything further during editing.
WAV files are substantially larger than the MP3 they came from, which is expected: nothing is being thrown away.
How to use it
Add your MP3 files.
Press Convert — the audio is decoded to uncompressed WAV.
Download the WAV, ready for editing software that will not take MP3.
Supported formats and limits
Input
MP3 audio
Output
WAV, uncompressed PCM
File size
Much larger — WAV stores every sample
Why convert
Editors, DAWs and some hardware require uncompressed audio
Where it runs
In your browser; nothing uploaded
Not for: Improving quality — WAV stops further loss but cannot restore detail the MP3 already discarded.
Frequently asked questions
Are my files uploaded to a server?
No. This conversion runs entirely inside your browser using your own device’s processing power. The file never leaves your computer or phone, which is why it also works when your connection drops.
Does converting to WAV improve the sound?
No. It preserves the current audio exactly rather than recovering what MP3 compression removed. The benefit is avoiding further loss during editing.
Why is the WAV file so much bigger?
WAV stores every audio sample uncompressed, typically ten times the size of the equivalent MP3.