Convert MP3 to WAV

Drop in one file or a folder full of them. Each MP3 is decoded by your browser and written out as 16-bit PCM WAV on your own machine.

Decoding runs in your browser. Nothing is uploaded, and no account is needed.

Keep working with this track

MP3 to WAV Converter

Convert MP3 to WAV for a DAW session, a CD burn, or hardware that reads nothing else. The decoding happens inside this page, so no file of yours is uploaded.
How it works

How to convert MP3 to WAV

1Step 1

Drop in your MP3 files

One file, a handful, or a whole folder. The page reads them straight off your disk — there is no upload, no account, and no record of what you converted anywhere except this tab.

Drop in your MP3 files
2Step 2

The MP3 is decoded to raw samples

Nothing to configure: WAV stores audio uncompressed, so bitrate settings do not apply. Expect the file to grow roughly tenfold. Decoding recovers what the MP3 holds, not what its encoder discarded — you get a bigger file, not a better one.

The MP3 is decoded to raw samples
3Step 3

Download one file, or the batch as a zip

Each row shows its before and after size the moment it finishes, so the jump in size is never a surprise. Take files one at a time, or pack the finished WAVs into a single zip.

Download one file, or the batch as a zip
What you get

A Converter That Is Honest About What WAV Gives You

Two things shape everything below: the decode runs in the page rather than on a server, and a decode cannot put back information the MP3 never stored.
Nothing is uploaded, because no server is in the path

Nothing is uploaded, because no server is in the path

Your browser's own decoder reads the MP3 and a WAV writer bundled with this page assembles the output. No upload bar to sit through, no copy of your file waiting in someone's queue — which matters here more than in the other direction, since people usually convert to WAV because the track is going into work they haven't released.
WAV that DAWs, CD burners and WAV-only hardware will open

WAV that DAWs, CD burners and WAV-only hardware will open

The output is plain 16-bit PCM in a standard RIFF container, at the sample rate and channel count the MP3 decodes to. That is what Reaper, Logic, Pro Tools and Audacity expect on import, what CD authoring software wants, and what a good deal of field hardware — samplers, PA players, game callers — needs, because it has no MP3 decoder at all.
MP3 to FLAC as well, when you want lossless without the bulk

MP3 to FLAC as well, when you want lossless without the bulk

A WAV runs about ten times the size of the MP3 it came from. MP3 to FLAC stores the identical decoded samples in roughly half that, and most current software reads it. Neither target restores anything the encoder threw out, so pick on the grounds that actually differ: what opens the file, and how much disk you are willing to spend.
Free, no account, nothing metered

Free, no account, nothing metered

No sign-up, no daily allowance, no target format held back for a paid tier. The one ceiling is 300 MB per file, and that is your browser's memory rather than a quota — there is no per-conversion cost here for anyone to pass on.
MP3 vs WAV

What Converting MP3 to WAV Actually Changes

The conversion writes out the samples the decoder produces, and that is all it can do. The file gets about ten times bigger; it does not get better, because the detail the MP3 encoder removed is not stored anywhere in the MP3. What you gain is a file that software and devices which refuse MP3 will accept.

MP3WAV
What the file holdsA perceptual encoding — detail judged inaudible was never writtenThe decoded samples, stored raw as 16-bit PCM
Four minutes of stereoAbout 4 MB at 128 kbps, 9.6 MB at 320About 42 MB at 44.1 kHz, 16-bit
What this step doesThe source — keep it, it is your only copy of that encodeUnpacks the source into a container more software accepts
Sound after the stepWhatever the original encode left behindIdentical to the MP3, stored far less efficiently
Editing and re-exportingEach save re-encodes and loses a little moreNo further loss, which is why editors and DAWs ask for it
Where it gets refusedCD authoring, some samplers, players with no MP3 decoderEmail, most upload forms, anywhere size is the constraint
FAQ

MP3 to WAV questions

Drop your MP3 files into the converter at the top of this page. There is nothing to set — WAV is uncompressed, so no bitrate applies — and a Download button appears on each row as soon as that file is decoded. No account, and no upload step to wait through.

No, and no converter can. The MP3 encoder permanently removed the detail it judged inaudible, and that information is not stored anywhere in the file. Decoding to WAV gives you the same audio in an uncompressed container: the file gets bigger, not better. What it does give you is a format that software and hardware refusing MP3 will accept, which is the actual reason to do it.

No. Your browser decodes the MP3 and a WAV writer shipped with the page assembles the output; nothing is transmitted. That is also why there is no queue and no waiting — no server is doing the work, so none of it is being scheduled against other people's files.

There is no quota, no daily cap and no file count limit. The single ceiling is 300 MB per file, which exists because a decode that large exhausts a browser tab's memory — oversized files are refused with a message rather than crashing the page.

Yes. Select as many files as you like, or a folder. They are decoded one after another so memory stays in hand, each row reports its own progress and sizes, and one button packs every finished WAV into a single zip.

Editors and DAWs want a format they can seek and cut sample-accurately without decoding first, and every edit of an MP3 would otherwise mean another lossy re-encode. CD authoring needs PCM because that is what an audio CD physically stores. And plenty of hardware — samplers, PA players, game callers, older field recorders — simply ships without an MP3 decoder, so WAV is the only file it can read.

Yes, with no sign-up. Every conversion runs on your own hardware, so there is nothing per file for us to charge for.

More conversions

Other Formats, Same Converter

Pairs without a page of their own — MP3 to FLAC, MP3 to AIFF — open the full audio converter with the output already selected.

Turn an MP3 into a WAV your software will accept

Free, no account, no batch limit. The decode runs in this tab and leaves nothing behind when you close it.