Convert MP3 to WAV
WAV is uncompressed audio: no codec, no decoding, just samples. Editors, samplers and older hardware often want exactly that.
Audio only · up to 10 files · 100 MB each — those numbers protect your memory, not our server
Getting the converter ready — this happens once, then your browser keeps it.
The converter could not start.
The engine files are missing from — copy ffmpeg-core.js and ffmpeg-core.wasm there.
Almost always a mismatched build: the worker is an ES module, so the core has to be the esm one too. Copy ffmpeg-core.js and .wasm from @ffmpeg/core/dist/esm/, not dist/umd/.
not in this build of the converter, so it is not offered.
What you lose
Nothing further — WAV keeps whatever it is handed. But this is worth being clear about: the WAV will contain the compressed audio, decompressed. Everything the MP3 threw away stays thrown away.
What you do not gain
NO QUALITY IS RECOVERED, and this is the most common misunderstanding on the whole site. The file becomes roughly seven times larger and sounds precisely the same. What you gain is a format that edits without re-encoding and plays on things that cannot decode MP3.
What it does to the size
Approximate, for stereo audio at the settings this tool uses by default. The real figure moves with the material — silence and speech compress far better than a full mix.
When this is the right conversion
Loading audio into an editor or a sampler, burning an audio CD, or feeding hardware that only reads PCM.
Other conversions
This tool is free because dbelo is a library of sound effects, and we would rather you found us this way than not at all.
Browse the sound library