MP3 to WAV Converter
Convert MP3 to WAV in your browser. Free, no signup, no upload.
How It Works
Select an MP3 file from your device and click Convert. The browser decodes the MP3 audio using the Web Audio API and writes it as an uncompressed WAV file — nothing is ever uploaded to a server. When conversion finishes you can preview the audio and download the WAV.
MP3 vs WAV
| MP3 | WAV | |
|---|---|---|
| Compression | Lossy | Uncompressed / lossless |
| File size | Small (~1 MB/min) | Large (~10 MB/min) |
| Best for | Streaming, sharing | Editing, production, mastering |
| Editing quality | Degrades on re-save | No re-compression loss |
Why Convert MP3 to WAV?
WAV preserves the full decoded quality of your MP3 and is the standard input for audio editing software, music production, and CD burning. While WAV files are larger, they are universally compatible with professional audio tools and avoid the re-compression artifacts that come from editing compressed formats directly.
Frequently Asked Questions
How do I convert MP3 to WAV for free?
Select an MP3 file with the button above and click Convert to WAV. Your browser decodes the audio and produces a downloadable WAV file. It is completely free, with no signup, no watermark, and no file size account limits.
Is my audio uploaded to a server?
No. Conversion happens entirely on your device using the Web Audio API. Your MP3 never leaves your computer or phone, which makes this safe for private recordings and unreleased music.
Why convert MP3 to WAV?
WAV is an uncompressed, lossless format required by most audio editing software, DAWs, CD burning, and mastering workflows. Converting to WAV avoids the re-compression artifacts you get when editing MP3 directly, and guarantees compatibility with professional tools.
Will converting MP3 to WAV improve the audio quality?
No — it cannot add quality that was lost during MP3 compression. It converts the already-decoded audio into a lossless container so it stops degrading further. The WAV will sound identical to the MP3 but will be larger and safe to edit.
How big will the WAV file be?
WAV is uncompressed, so files are much larger than MP3 — roughly 10 MB per minute of stereo CD-quality audio. A 3-minute song is around 30 MB as WAV versus 3–7 MB as MP3.