MP3 to WAV
MP3 to WAV decodes an MP3 to an uncompressed 16-bit WAV for audio editors, DJ software or CD burning, in your browser with nothing uploaded.
Drop a video or audio file, paste it, or click to choose one
MP3, or any other audio or video file
Video or audio file · processed on your device, never uploaded
At a glance
- Accepts
- MP3, plus M4A, AAC, OGG and other common audio
- Outputs
- 16-bit PCM WAV at the MP3's own sample rate and channel count
- Where it runs
- Entirely in your browser, on your device
- What leaves your device
- Nothing - the file never leaves your device
- Limits
- A WAV is about ten times bigger than a 128 kbps MP3 and cannot restore detail the MP3 discarded; the finished file is held in memory until saved, so very long WAVs can fail on phones
- Account
- Not required - there is no sign-up
- Price
- Free, with no watermark and no usage cap
- Made by
- Visrut
- Last updated
- 11 October 2026
Some software still wants WAV: older audio editors, sampler and DJ tools, CD burning apps, phone systems that play a greeting, and speech-analysis scripts that read raw samples. This page decodes the MP3 with your browser's own decoder and writes a standard 16-bit WAV, without sending the file anywhere.
What you get
- Same sample rate and channels as the MP3, so a 44.1 kHz stereo MP3 gives a CD-format WAV and a mono MP3 gives a mono WAV.
- Same length. In our test the WAV was 10.03 seconds for a 10-second MP3; the extra is the MP3 encoder's own padding, which is part of the MP3's audio.
- Same sound. Nothing is added or removed; the WAV is the MP3, uncompressed.
Need a specific rate?
The WAV keeps the MP3's sample rate. If a phone system or a speech tool asks for something like 8 kHz or 16 kHz mono, convert here first and resample in an editor such as Audacity. For speech that needs cleaning up, Remove Background Noise outputs a 16 kHz mono WAV directly.
Frequently asked questions
Does converting MP3 to WAV improve the quality?
No. The MP3 encoder already discarded some detail when the MP3 was made, and nothing can put it back. The WAV sounds exactly like the MP3; what changes is that it is uncompressed, so software that can't read MP3, or that would otherwise decode it again on every edit, works with it directly.
What format is the WAV?
16-bit PCM at the MP3's own sample rate (usually 44.1 kHz) and channel count. A 44.1 kHz stereo MP3 therefore becomes a CD-format WAV, which is what CD burning software expects.
How big will the WAV be?
About 10 MB per minute for 44.1 kHz stereo, roughly ten times a 128 kbps MP3. A 10-second, 192 kbps MP3 of 236 KB became a 1.69 MB WAV in our test. The tool shows the expected size before you convert.
Is a long MP3 a problem on a phone?
It can be. The WAV is built in memory until you save it, and an hour of stereo WAV is about 635 MB. A computer copes; a phone may run out of memory. If you are on a phone, convert shorter pieces.