Convert MP3 to WAV online — free, no upload

Need an uncompressed WAV file for audio editing software, or a format required by specific hardware or software? This converts MP3 to WAV locally in your browser.

Powered by FFmpeg.wasm — a real audio engine compiled to WebAssembly. Your audio file is never uploaded.

Loading converter…

Enable JavaScript to use this tool

Related tools

Remove Background · Image → Text · Resize Image · DOCX → PDF · EMI Calculator · Word Daily

Frequently asked questions

Will the WAV file be much larger than the MP3?

Yes — WAV is uncompressed, so it will typically be 5-10x larger than the original MP3.

Is my audio file uploaded to a server?

No. The conversion runs entirely inside your browser. Your audio file is never sent over the network — see our How It Works page for the technical details.

Will converting MP3 to WAV improve the audio quality?

No — MP3 is already a lossy format, so converting to WAV preserves the current quality but can't add back detail that was lost during the original MP3 compression.

Can I convert to other formats too?

Yes, the embedded converter also supports AAC, OGG, and FLAC output — just choose a different format from the dropdown.