MP3 to WAV converter
Convert MP3 to WAV in your browser. Decodes to uncompressed audio for editing — the file grows about tenfold and the quality does not come back.
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Accepts .mp3 · Up to 20 files at a time · up to 538 MB each "Upload" and "download" here mean your browser reading a file from this device and writing one back to it. Nothing is sent to a server — open your browser's network panel and watch: no request carries your file.
FAQ
Does converting to WAV improve the sound?
No. It stores the same audio without compression. Everything the MP3 encoder discarded is permanently gone, and no format can bring it back. What you gain is a file that will not degrade further when edited and saved.
Why is the file so much bigger?
Because WAV stores every sample as a plain number with no compression. That is about 10 MB per minute in CD-quality stereo, regardless of what the audio sounds like — a tenfold increase over a typical MP3 is normal.
When should I actually do this?
Before editing in software that wants uncompressed input, when preparing samples or game audio, or when a tool refuses MP3 outright. For listening or sharing, converting to WAV gains you nothing and costs a great deal of space.
Why is the size limit lower than for other conversions?
Because the output is much larger than the input here, and it is the output that has to fit in the converter's working memory. Most conversions shrink the file; this one multiplies it by ten, so the ceiling on the input has to come down to match.
What sample rate and bit depth do I get?
The source rate is kept by default — usually 44.1 or 48 kHz — and the samples are written as standard 16-bit PCM. You can force a different rate in the advanced options if the software you are feeding requires one.
Is FLAC a better choice than WAV?
Often, yes. FLAC stores exactly the same samples losslessly at about half the size, and most editing software reads it. Choose WAV when a tool specifically demands uncompressed input.
Is it really free?
Yes — every conversion on this site, with no account, no watermark and no daily cap. The work happens on your own device, so there is no server bill for us to pass on to you.
Do I need to install anything?
No. It runs in any modern browser, on Windows, macOS, Linux, Android and iOS. There is nothing to download and nothing to sign up for, and once the page has loaded it keeps working with the network switched off.
Related converters
- WAVtoMP3Re-encodes to MP3 — a second lossy pass
- MP3toMP4Wraps the audio in a video container over a black frame
- MP3toAACRe-encodes to AAC — a second lossy pass
- MP3toOGGRe-encodes to OGG — a second lossy pass
- MP4toWAVDrops the video, keeps the audio losslessly as WAV
- AACtoWAVDecodes to WAV, which stores audio losslessly
- FLACtoWAVDecodes to WAV, which stores audio losslessly
- OGGtoWAVDecodes to WAV, which stores audio losslessly