MP3 to WAV Converter

1. Upload your .mp3 file above — WAV is set as the output.
2. Click Convert and wait a few seconds.
3. Download the WAV.

It works the same in any browser on Windows, Mac, iPhone or Android — no app to install and no account to make.

No — and it's worth being clear about, because plenty of pages imply otherwise. MP3 is a lossy format: when your file was first made, audio data was permanently thrown away to shrink it. Converting to WAV writes whatever is left into an uncompressed container, but it cannot bring back anything that was discarded.

So the WAV will be several times larger and sound exactly the same as the MP3 — not better. If you need genuinely high-quality audio, it has to come from a lossless source in the first place; no conversion adds detail back. Read Lossless vs Lossy Audio: Which Format to Use for the full explanation.

There are real reasons — they're just about compatibility and editing, not quality:

• Software that wants uncompressed audio.Many DAWs, samplers, and DJ decks prefer or require WAV, and some older editors and CD/broadcast tools don't read MP3 cleanly.
• Editing without stacking compression.If you're going to cut, pitch, or process the file, converting to WAV first means your edits don't add a second lossy generation on top of the MP3's.
• A predictable, universal working file. WAV behaves the same everywhere, with no codec surprises mid-project.

"Some software wants uncompressed audio" is true but vague. Here's where it bites in practice — the cases where an MP3 genuinely won't do and a WAV is the fix:

CD burning & disc authoring

Red Book audio CDs are 16-bit / 44.1 kHz PCM. Burning software wants WAV or AIFF, not MP3, so the disc plays in standalone players.

Broadcast & radio automation

Playout systems and station libraries standardise on uncompressed audio to avoid a second lossy pass over already-compressed source.

Older samplers & hardware

Many hardware samplers and legacy editors read WAV natively and either can't open MP3 or decode it unreliably.

DAWs that re-encode on import

Some DAWs transcode MP3 on import; feeding them a WAV means you control the decode once, up front, instead of at every save.

DJ software & CDJs

Some DJ setups and older CDJ firmware prefer WAV for gapless, glitch-free playback of key tracks.

In every one of these the WAV isn't higher quality than the MP3 — it's just the container the tool insists on. If none of these is your situation, keeping the MP3 is usually the right call.

The output is 16-bit PCMat the source MP3's own sample rate — almost always 44.1 kHz, since that's what most MP3s are. There's no resampling and no upsampling: the converter decodes the MP3 to raw samples and writes those out uncompressed. That makes the WAV a faithful copy of the decoded MP3, bit-for- bit the same audio in a lossless container.

This is worth stating because "bigger file" makes people assume "higher resolution." It isn't. A 44.1 kHz / 16-bit WAV made from a 128 kbps MP3 carries exactly the fidelity of that 128 kbps MP3 — the extra bytes are the cost of storing it uncompressed, not new detail. If you need a different rate or bit depth for a project, set it in your DAW after importing, or use the sample rate converter — but know that neither adds quality the MP3 never had.

Yes — but not the way people expect. Converting to WAV doesn't make the audio better. What it does is stop it getting worse as you work.

Every time you export back to MP3, the encoder throws away data again — a second, third, fourth lossy generation stacked on the first. Edit an MP3 in place, re-save as MP3, and you've compounded the loss. Convert to WAV first, do all your cutting, pitching, and processing on the uncompressed file, and each edit works on the full decoded audio with nothing further discarded. You only re-compress once, at the very end, if you export back to MP3 at all.

So the rule is simple: the WAV is your working file, not your archive. It won't recover what the MP3 lost, but it keeps every edit from adding more loss on top.

Converting to WAV is usually the first step in an edit. Once you have it, the next thing runs here too, with no re-upload:

Trim the WAV

Cut a clean section — lossless edits, no re-compression.

Pitch shift

Change key without an extra lossy generation.

Change tempo

Speed up or slow down the uncompressed file.

Other formats

Send it on to FLAC, AIFF, M4A and more.

Going the other way to shrink a file? The WAV to MP3 converter does that. For any other pair — M4A, FLAC, AAC, OGG, AIFF, including M4A to MP3 — use the audio converter. Pulling audio out of a video first? The video to audio converter handles that.