MP3 to WAV Converter
Convert MP3 to WAV – uncompressed 16-bit PCM for audio editors, DJ software, CD burning and devices that only accept WAV. Keep the original sample rate or choose 44.1 or 48 kHz, in your browser and free.
- Free
- No upload
- No watermark
Files
Settings for all files
Options · Original rate · Original channels
More options
GIFs can be up to 60 s long (30 s on phones). Use Trim (⋯ on a file) to pick a part.
Same copies AAC sound without re-encoding when the file already has it.
16-bit PCM, the format CDs and every audio editor use.
Add files to see what will happen to each one.
Add files to convert
Runs in your browser. Engine: mp4box.js (BSD-3-Clause), mp4-muxer and webm-muxer (MIT), gifenc (MIT), LAME via lamejs (LGPL-3.0, GPL-3.0) – licenses.
What works in your browser
Everything runs on your device, so what you can create depends on the browser. The last column is checked live in the browser you are using now and always wins over the table.
| Output | Chrome / Edge | Chrome Android | Firefox 130+ | Safari 16.4–18 | Safari 26+ | This browser |
|---|---|---|---|---|---|---|
| MP4 (instant copy) | Yes | Yes | Yes | Yes | Yes | Yes |
| MP4 (re-encode, H.264) | Yes | Yes | Yes, sound as Opus | Yes, AAC sound copied only | Yes | – |
| MOV | Yes | Yes | Copies only | Yes, AAC sound copied only | Yes | – |
| WebM (VP9 + Opus) | Yes | Yes (slow) | Yes | Checked live | Checked live | – |
| GIF | Yes | Yes | Yes | Yes | Yes | – |
| MP3 | Yes | Yes | Yes | Yes, long files limited | Yes | – |
| M4A | Yes | Varies by device | Copies only | Copies only | Yes | – |
| WAV | Yes | Yes | Yes | Yes, long files limited | Yes | – |
| Opus | Yes | Yes | Yes | Copies only | Checked live | – |
Instant copies work in every browser. Without WebCodecs (older browsers) re-encoding is not available, but MP3 and WAV files can still be made.
How to convert MP3 to WAV
- Pick the MP3 files you want as WAV.
- WAV is selected. Keep the sample rate as Original, or choose 44.1 kHz for CD or 48 kHz for video.
- Press Convert. Decoding an MP3 takes only a moment.
- Download the WAV files and import them into your editor, DJ app or CD-burning software.
WAV the way apps expect it
Standard 16-bit PCM
The most compatible kind of WAV: it opens in every editor, sampler and CD tool.
Pick the sample rate
44.1 kHz for music and CDs, 48 kHz for video timelines, or the original rate of the MP3.
Many files at once
Convert a set of samples or a whole playlist and save them together as a ZIP.
Frequently asked questions
Is MP3 to WAV free, and is my audio uploaded?
It is free to use with no sign-up, and the MP3 is decoded by your browser on your own device. Nothing is uploaded, so unreleased music and private recordings stay with you.
Does converting MP3 to WAV improve quality?
No. The WAV is an exact, uncompressed copy of what the MP3 sounds like, so it does not get worse, but it cannot recover detail that was lost when the MP3 was made. Convert to WAV when an app requires it, not to improve the sound.
Why is the WAV so much bigger than the MP3?
MP3 is compressed, typically to 128–320 kbps, while 16-bit stereo WAV at 44.1 kHz always uses 1,411 kbps. A 5 MB MP3 song therefore becomes a WAV of about 40–50 MB.
How long does MP3 to WAV take?
Usually a second or two per song, because decoding is fast and WAV needs no encoding. Long mixes take a little longer and are limited by the memory of your device.
Which browsers can convert MP3 to WAV?
All current browsers can, because every browser decodes MP3. On iPhone, very long MP3 files may exceed the memory limit; the file row warns you before converting and suggests trimming.
What happens to quality
A WAV file stores every sample uncompressed, which is what many audio editors, samplers, CD-burning apps and broadcast systems expect. Converting an MP3 to WAV decodes it once to 16-bit PCM; the WAV sounds exactly like the MP3, but it does not restore detail the MP3 encoder removed. The result is about ten times larger: one minute of stereo at 44.1 kHz takes roughly 10 MB.
Choose 44.1 kHz for CDs and most music software, or 48 kHz for video projects; Original keeps the MP3's own rate. Mono MP3s stay mono unless you pick Stereo. Because the whole MP3 is decoded at once in this version, very long files are limited by memory – to around 7 minutes of stereo sound on an iPhone and much more on a computer.