About this tool
Audio editors, samplers, phone systems, and some hardware only accept WAV. Converting produces an uncompressed 16-bit PCM file at the original sample rate that any of them will load. It cannot restore detail the MP3 lost, but it prevents further loss during editing.
About the formats: MP3 is the universal lossy audio format. Practically every device, car stereo, and app made in the last 25 years plays it, and at 192-320 kbps it is indistinguishable from the original for most listeners. WAV stores uncompressed PCM audio: perfect quality, but around 10 MB per minute. It is the format audio editors, samplers, and studios expect.
MP3 and WAV, side by side
| .mp3 in | .wav out | |
|---|---|---|
| Compression | Lossy | None |
| Typical size | 1 MB per minute at 128 kbps | 10 MB per minute (CD quality) |
| Plays on | Everything | Everything |
| Best for | Sharing, players, podcasts | Editing, samples, masters |
Rows where the two differ are marked. The full story on each: MP3 files and WAV files.
How to use it
- Drop your MP3 files into the box above, or click to browse. Nothing is uploaded.
- Click Convert to WAV and wait a moment.
- Download the results individually or all at once as a ZIP.
Questions
Does MP3 to WAV improve the sound?
No. It decodes the MP3 exactly as a player would and stores those samples uncompressed. Quality is identical to playback.
Why is the WAV so large?
WAV is uncompressed: about 10 MB per minute of stereo audio at 44.1 kHz.
Is it free, are files uploaded, which browsers work: the general questions are answered once for the whole site.