How to use the MP3 to WAV converter
- Pick the MP3 files.
- Under More settings, choose 44.1 kHz for an audio CD or 48 kHz for a video timeline.
- Convert to WAV and download.
What the WAV contains
Each MP3 is decoded a single time into uncompressed 16-bit samples. It sounds the same as the MP3, because what MP3 discarded cannot be recovered, but the audio is now simple to cut and mix, with no further loss from later edits.
Expect a file roughly ten times heavier than a 128 kbps MP3, close to 10 MB a minute for 44.1 kHz stereo.
Matching your project
Video editing usually runs at 48 kHz, and some programs let a 44.1 kHz track drift slightly against 48 kHz picture. Converting at the project’s rate avoids that. Audio CDs, on the other hand, need 44.1 kHz stereo.
MP3 encoders put a few milliseconds of silence at the start. That silence is decoded too, so trim it if you need sample-exact alignment with picture.
Music under a video edit
When a track will sit under footage, a WAV at the timeline’s rate imports cleanly into most editors and scrubs smoothly, which compressed audio does not always do.
For a voice-over or narration clip, setting Channels to Mono halves the WAV. Several tracks can be queued together, each written with the same sample rate so they line up in one project.
Questions
Can I get 24-bit WAV?
No, output is 16-bit. An MP3 never held more detail than 16 bits can store, so nothing is lost.
Is the MP3 uploaded?
No. It is decoded inside your browser.
Can I make a mono WAV?
Yes. Choose Mono in the Channels menu of More settings; the WAV then takes half the space of a stereo copy.
Can I convert a whole album for a CD?
Yes. Add all the tracks, set 44.1 kHz, and download the WAVs together as a ZIP for your burning program.