UlvixorMP3 to WAV Converter
Convert an MP3 file to uncompressed WAV, decoding the audio with your browser's Web Audio API and generating a 16-bit PCM WAV. The whole process happens locally, without uploading your file to any server.
How it works
- Select an MP3 file from your device.
- Your browser decodes the audio using the native Web Audio API.
- The result is re-encoded as lossless WAV (16-bit PCM).
- Listen to a preview of the result directly on the page.
- Download the WAV file.
Use cases
- Get an uncompressed version of an MP3 to edit it in an audio program.
- Prepare an audio file for software that only accepts WAV.
- Avoid double compression when re-editing and re-exporting audio.
- Check how a decoded MP3 sounds before processing it further.
Use cases
- Get an uncompressed version of an MP3 to edit it in an audio program.
- Prepare an audio file for software that only accepts WAV.
- Avoid double compression when re-editing and re-exporting audio.
- Check how a decoded MP3 sounds before processing it further.
Common mistakes
- Expecting the resulting WAV to sound higher quality than the original MP3.The WAV is lossless from this point forward, but it can't recover detail that MP3 compression already discarded when the original file was created. Converting to WAV prevents further loss — it doesn't restore what was already lost.
- Being surprised that the WAV file is much heavier than the original MP3.WAV doesn't compress the audio, so a file lasting several minutes can weigh tens of megabytes. That's the expected cost of working losslessly.
- Uploading a file with an .mp3 extension that's actually a different format or is corrupted.If the browser can't decode the file, the tool shows an error instead of generating a corrupted or empty WAV.
Frequently asked questions
No. Decoding and re-encoding happen entirely in your browser with the Web Audio API. The audio never leaves your device.
No. MP3 compression discards information permanently. The generated WAV is a lossless copy of what the MP3 contained, not an improved version of the original uncompressed audio.
A standard 16-bit PCM WAV, with the same number of channels and a 44,100 Hz sample rate, compatible with virtually any audio player or editor.
There's no fixed limit, but very long files generate a heavy WAV and can take longer to process, since everything happens in your browser's memory.
Alternatives
Programs like Audacity or VLC can export any audio to WAV from their interface. This tool is handy for a quick, one-off conversion without installing additional software.