How to decompress mp3 to uncompressed wav — browser tool
- Step 1Upload your MP3 file — Drop your compressed MP3.
- Step 2Select WAV sample rate and bit depth — Select bit depth.
- Step 3Download the WAV file — Download the decompressed WAV.
Frequently asked questions
Does converting MP3 to WAV improve quality?+
No — WAV is a container format, not a quality level. Converting an MP3 to WAV decodes the MP3 and stores the already-decoded samples in uncompressed PCM. The original compression artefacts are preserved in the WAV. You cannot recover lossy-compressed audio by converting to an uncompressed format.
Why would I convert MP3 to WAV if it does not improve quality?+
Common reasons: your DAW or sampler does not import MP3; you need to batch-process audio in a system that only accepts WAV; you need a specific sample rate (e.g. 44.1 kHz) for compatibility; or you need to embed the audio in a broadcast or archival format that requires PCM.
What sample rate should I use for the WAV output?+
Match the sample rate of your project: 44.1 kHz for music/CD, 48 kHz for video/broadcast, 96 kHz for high-resolution projects. Upsampling (e.g. 44.1 kHz MP3 → 96 kHz WAV) does not add quality — it just increases file size. Use the same rate as the source unless your destination system requires a specific rate.
Privacy first
All audio processing runs locally in your browser using FFmpeg compiled to WebAssembly. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.