MP3 to WAV Converter
Upload an MP3 and get back a RIFF WAV containing 16-bit PCM audio, with the sample rate and channel count of the source left exactly as they were. The output is always 16-bit and is never resampled, so check your MP3's rate if the destination is fussy.
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Why convert MP3 to WAV
An MP3 is a stream of compressed frames that has to be decoded before anything can touch it sample by sample. WAV is the opposite: a thin RIFF header followed by raw PCM samples. That is why so many tools insist on it. Hardware samplers and drum machines read WAV from a card and nothing else, voice and IVR systems expect PCM, and CD authoring software works from it. Decoding once, up front, also means your editor is not re-decoding compressed frames on every seek and every render.
Here the job is one ffmpeg 5.1.9 pass. The MP3 is decoded and written straight out as a RIFF WAV using 16-bit little-endian PCM. There are no filters in the chain: no normalization, no fade, no dithering choice, no resampling and no trimming, and the entire file is converted rather than a selected region. Because MP3 is a lossy format, this is a container and encoding change only. The WAV holds the audio as the MP3 decoder produced it; detail thrown away by the original MP3 encoder is gone and cannot be restored by any converter.
Preserved: the sample rate, so a 22.05 kHz voice recording stays at 22.05 kHz; and the channel count, so mono stays mono instead of being doubled. Title, artist and album tags are written into the WAV as RIFF INFO fields, which Windows Explorer and many editors display, though some DAWs ignore WAV tags entirely. Lost or changed: embedded cover art is always dropped, plain WAV has no chapter markers, and the bit depth is fixed at 16 bits. Expect the WAV to be far larger than the MP3, since nothing is compressed any more.
This is mostly a producer's and editor's conversion: chopping a track into samples, lining audio up in a DAW that behaves better with PCM, feeding a hardware unit, or preparing a file for a system that lists WAV as its only accepted upload. It is also the quickest way to get playable PCM out of an MP3 on a machine where you are not allowed to install Audacity or VLC.
How to convert MP3 to WAV here
- Confirm the file is a real MP3 and fully downloaded. A partially downloaded track will usually decode to a shortened WAV or stop with an ffmpeg error, so re-download anything that was interrupted.
- Drop the files onto the page or browse for them. A batch holds up to 10 files on the guest and free tiers, with a 50 MB per-file ceiling as a guest and 100 MB with a free account.
- You can mix sources in the same batch. Any audio format this site accepts that can target WAV, such as m4a, flac, aac, wma or aiff, can be uploaded alongside your MP3s and will also come out as 16-bit PCM WAV.
- Press Convert. There are no settings to pick. Typical song-length MP3s are done almost immediately after the upload finishes.
- Download each result. It is named after the source file with a .wav extension, and the link works for roughly four hours before the file is deleted from our servers.
- Check the sample rate of the WAV in your editor before burning a CD or loading a sampler. We copy the source rate through untouched, so a 48 kHz MP3 gives a 48 kHz WAV and a 22.05 kHz recording stays at 22.05 kHz; any resampling to 44.1 kHz has to be done by your CD or sampler software.
What you get from this converter
- Uncompressed RIFF WAV with 16-bit little-endian PCM, written by ffmpeg 5.1.9
- Sample rate and channel count carried through unchanged, including mono and low-rate voice recordings
- Title, artist and album tags written into the WAV as RIFF INFO fields
- Whole-file conversion with no normalization, resampling or added processing, so the decoded audio is what you hear in your editor
- Batches of up to 10 files, and other audio formats can ride along in the same batch
- Nothing to install on Windows, macOS, Linux or ChromeOS: you only need a browser, and the decoding and encoding run on our servers
Video Tutorial
Watch this step-by-step tutorial to learn how to convert MP3 files to WAV format online for free using MiConvert.com. No software installation required.
MP3 to WAV questions
Does converting to WAV improve the sound?
No. The MP3 encoder already discarded part of the audio permanently, and decoding to PCM cannot bring it back. What WAV gives you is a format that does not lose anything further while you cut, process and re-render, which is why it is the sensible working format.
Can I get a 24-bit or 32-bit float WAV?
Not from this page. Our WAV output is always 16-bit PCM and there is no bit-depth selector. If your project needs a deeper working file, import this 16-bit WAV into your DAW and let the project run at 24-bit or float; or, if you are converting a genuinely lossless source rather than an MP3, our FLAC target does preserve 24-bit audio.
Why is the WAV file so much bigger?
MP3 stores compressed frames; WAV stores every sample uncompressed, so the size follows directly from the sample rate, bit depth and channel count rather than from the audio content. A multi-minute stereo track becomes a sizeable file, which is also why long MP3s can run into the per-file upload limits.
My conversion failed with an ffmpeg error. What now?
Failures on this pair are rare and almost always about the input: a truncated or partially downloaded MP3, or a file that is not MP3 data despite the extension. Re-download or re-export the track and upload it again.
Does the cover art or the ID3 artwork survive?
No. All picture streams are removed during conversion, so artwork embedded in the MP3 will not appear in the WAV. Plain WAV has no standard place for cover images anyway; keep the original MP3 if you need the artwork.
How many files can I convert, and is there a bulk option?
Ten files per request as a guest or free user, 25 on Plus and 50 on Pro, with a cap of 10 conversion jobs per hour per IP on the free tiers. Each converted file is downloaded individually, as there is no combined ZIP download, and nothing here is limitless.
Is it private, and how long do you keep the files?
Transfers run over HTTPS and conversion happens on our servers rather than in your browser. The uploaded MP3 is deleted as soon as the job completes, and the WAV and its download link expire automatically after about four hours. We do log file names, sizes and conversion outcomes, and the download link, while random and unlisted, works for anyone who has it until it expires.