Convert MP3 to WAV
Turn an MP3 into a standard PCM WAV file for editing and mastering. Everything runs in your browser, so the file never leaves your device.
Why convert MP3 to WAV?
You convert MP3 to WAV when a tool refuses the MP3 or works better with raw PCM. That covers a lot of ground: editing in Audacity, dropping a clip onto a timeline in Pro Tools, Reaper, or Ableton Live, prepping tracks for a CD burn, or feeding audio into software and hardware samplers that only read WAV. WAV is the plain interchange format that everything on Windows understands, with no codec surprises. If a program keeps stalling on your MP3, WAV is usually the format it actually wants.
Quality and file size
Be clear on one thing: converting MP3 to WAV does not restore quality. An MP3 already threw away audio data when it was encoded, and unpacking it into WAV cannot bring any of that back. What you get is the same sound wrapped in an uncompressed container, which is exactly what editors and DAWs want to work with. Expect the file to get much larger, roughly 10 MB per minute at CD quality, since WAV stores every sample without compression. Use it for editing and delivery, not as a way to upgrade a low-bitrate MP3.
MP3 to WAV: common questions
Does converting MP3 to WAV improve the sound quality?
No. The MP3 encoder already discarded audio data, and moving to WAV cannot recover it. You get the same audio in an uncompressed container, just in a much larger file.
Why is my WAV file so much bigger than the MP3?
WAV stores uncompressed PCM audio, so it keeps every sample at full size, around 10 MB per minute of CD-quality stereo. MP3 is compressed, which is why it was small. The size jump is normal and expected.
Is my file uploaded anywhere during the conversion?
No. The conversion runs entirely in your browser using FFmpeg compiled to WebAssembly. Your MP3 never leaves your device, and we never see it, store it, or train on it.
Will this WAV work in my DAW and on Windows?
Yes. It is standard 16-bit PCM WAV, which loads in Audacity, Pro Tools, Reaper, Ableton, and virtually every Windows editor and audio tool without extra codecs.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools are side experiments we wanted to share. No upsell, but if you're curious about the bigger thing, take a look.