MP3 to WAV
Your files never leave your browser. Nothing is uploaded to any server.
No sign-up · No account needed to download · Unlimited conversions
Files
Settings apply to every file. Set start and end to keep only part of a file.
How to convert MP3 to WAV
- Drop one or more MP3 files into the box above, or tap Choose MP3 files.
- Pick a bit depth and a sample rate. Same as the MP3 keeps the MP3's own sample rate.
- To keep only part of a file, type a start and end time in seconds. Change the volume if you need to.
- Press Convert, then Download WAV next to each file.
MP3 to WAV converter FAQ
Are my files uploaded?
No. Your browser decodes the MP3 and writes the WAV on your device. The only files your browser downloads are this page and its two scripts, both from this site.
Do I need an account to download?
No. There is no sign-up or login on this site. The download button saves the WAV straight from your browser.
Which bit depths and sample rates can I choose?
16-bit PCM, 24-bit PCM or 32-bit float. For the sample rate, keep the MP3's own rate or choose 22.05, 44.1, 48, 88.2 or 96 kHz. Mono MP3s stay mono and stereo MP3s stay stereo.
Does converting MP3 to WAV improve quality?
No. MP3 is a lossy format, and detail removed when the MP3 was made can't come back. A WAV stores the decoded audio without further compression, which is what many audio editors and devices want. A higher bit depth or sample rate doesn't add detail that the MP3 doesn't have. In our tests, the browser's MP3 decoder also flattened any peaks that went above full scale, so those stay flat whatever bit depth you pick.
How big will the WAV be?
Much bigger than the MP3. A minute of stereo audio at 44.1 kHz is about 10 MB in 16-bit, about 15 MB in 24-bit and about 20 MB in 32-bit float. Each file shows its estimated WAV size before you convert. A WAV file can't be larger than 4 GB, so the page won't start a conversion that would go past that.
Is the WAV exactly as long as the MP3?
In our tests with MP3s made by the LAME encoder, the WAV was exactly as long as the audio the MP3 was made from. Tools that read the MP3 file itself can report it a little longer: ffprobe showed our test MP3s 0.03 to 0.06 seconds longer, because MP3 encoding pads the start and end.
Are song titles and cover art kept?
No. The WAV contains the audio only. Title, artist and cover art from the MP3 are not copied.
Is there a limit on file size or number of files?
This page sets no limit on the number of files, and they are converted one after another. Each file is decoded into memory in full first. In our tests in the Chromium browser, a 60-minute stereo MP3 converted to a 16-bit, 44.1 kHz WAV in about 25 seconds, while the same file at 96 kHz and a 2-hour MP3 at 44.1 kHz failed while decoding. Your device may manage more or less. A WAV file also can't be larger than 4 GB.