AnyFormat

00 MP3 → WAV

MP3 to WAV

For editors and hardware that want raw PCM.

Drop files or a folder here

or choose from your device · paste with ⌘V / Ctrl+V

.mp3

03Options 4

Right for speech, wrong for music. At a fixed quality the file size does not change — but mono tolerates a much lower quality than stereo, so combine the two to actually shrink the file.

Leave at 0 for the whole file.

0 means run to the end.

  • No upload The conversion runs in this tab. Your file never travels — not to us, and not to the advertising.
  • No sign-up, no email, no daily cap There is no account system to sign up to.
  • No size limit we invented Only your device's memory — about ~2 GB on a desktop browser, ~400 MB on a phone.
  • Turn your Wi-Fi off and convert anyway The conversion needs nothing but this page. Ads will not load without a connection; your file will still convert. That is the whole claim, and it takes five seconds to check.

Decodes an MP3 to uncompressed WAV. Useful when something downstream wants raw PCM — a DAW, a hardware sampler, a transcription model, an analysis script.

It does not improve the audio

Worth saying plainly, because it is the most common misunderstanding about this conversion. MP3 compression is lossy and permanent. Decoding to WAV gives you an uncompressed copy of the degraded audio — the same sound, in a much larger file.

What it does achieve is stopping further loss. If you are about to edit, layer or process the audio, working in WAV means the edits are not re-compressed at each step.

The size, and how to control it honestly

About 10 MB per minute in CD-quality stereo, so a four-minute track is around 40 MB from a 4 MB MP3. Ten times larger for identical audio.

If the source was mono to begin with — most spoken-word MP3s are — forcing mono halves the WAV with no loss at all. Dropping the sample rate is the other lever, and for speech 22 kHz is imperceptible.

What is written

16-bit PCM in a standard RIFF container at the source's sample rate unless you change it. That is what every DAW, sampler and transcription tool expects, and it is the safest possible WAV variant — no floating point, no exotic chunk, nothing that trips up older hardware.

Other names for this

Also searched as “convert mp3 to wav”, “mp3 to pcm”.

Questions

Will this make my MP3 sound better?
No. MP3 loss is permanent. This gives you an uncompressed copy of the same audio and prevents any further loss.
Why is the file ten times bigger?
WAV stores every sample uncompressed. That ratio is exactly what MP3 compression was achieving.
What bit depth do I get?
16-bit PCM, which is CD quality and what every DAW and sampler accepts.
Is my file uploaded?
No. The demuxing, decoding and encoding all happen in this tab using the browser’s own media stack plus a WebAssembly encoder. A recording can be an interview, a lecture, a private call — none of it is transmitted. Turn your Wi-Fi off after the page loads and it still works.
How large a file can I convert?
There is no imposed limit, only your device’s memory — around 2 GB in a desktop browser and 400 MB on a phone, since the file is held in memory while it converts. A two-hour video converts in well under a minute on a laptop.
Can I convert several files at once?
Yes. Drop as many as you like, or a whole folder. Each keeps its original name with the new extension, and you can download them individually or as a ZIP.