MP3 to WAV converter
Turn an MP3 into an uncompressed WAV for editors and devices that need one.
Runs in your browser. Nothing is uploaded.
Drop an audio file
M4A, WAV, MP3, FLAC, Ogg or any audio your browser can play. It stays on your computer.
Runs on Mediabunny (MPL-2.0). MP3 encoding uses the LAME MP3 encoder (LGPL). OGG encoding uses libvorbis (BSD).
More about this tool
- 1
Add the MP3
Drop the file or choose it. WAV is already selected.
- 2
Convert
The MP3 is decoded in your browser, which takes a few seconds for a song.
- 3
Download
Play the WAV to check it, then download it.
The WAV holds the MP3's sound decoded to plain samples: 16-bit, at the MP3's sample rate and channels. It sounds exactly like the MP3. Detail the MP3 dropped when it was made doesn't come back.
What you gain is a file every audio tool reads the same way, which you can cut, process and save again without another round of MP3 compression.
WAV isn't compressed, so stereo at 44.1 kHz takes about 10 MB a minute, roughly seven times a 192 kbps MP3. A four-minute song comes to about 40 MB.
macOS comes with afconvert, which writes 16-bit WAV from Terminal; ffmpeg does the same by default:
- afconvert -f WAVE -d LEI16 song.mp3 song.wav
- ffmpeg -i song.mp3 song.wav
Sources
Questions
No. The MP3 is decoded and the WAV is written in your browser. Nothing is sent anywhere.
No. The WAV sounds the same as the MP3. It just won't lose more when you edit and save it.
16-bit PCM at the MP3's sample rate, usually 44.1 kHz, in mono or stereo like the MP3. Almost every editor and device reads it.
WAV stores every sample uncompressed: about 10 MB a minute for stereo at 44.1 kHz.
Yes. M4A, FLAC and Ogg files work too, as long as your browser can play them.
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