Convert MP3 to WAV
Convert MP3 to WAV free in your browser. No upload, no signup, no watermark. Files stay on your device.
drop a .mp3 file
or click to browse
max 500 MBrelated
more video & audio converters
see all video & audio converters →guide
how to convert mp3 to wav
Drop your MP3 file
Drag your MP3 file into the drop zone above, or click the box to pick a file from your computer or phone. The browser reads the file directly — nothing uploads.
Click Convert
The page runs ffmpeg.wasm on your device to decode the MPEG-1 Audio Layer III and encode it as Waveform Audio File. Most conversions finish in a few seconds; large or codec-heavy files (RAW, video) can take longer.
Download the WAV file
When the conversion finishes, the WAV file is ready to download. Save it anywhere on your device.
FAQ
common questions
Will converting to WAV improve the audio quality?
No — and this is the key thing to understand. MP3 is lossy: data was thrown away during the original encode. Converting to WAV (lossless) wraps the existing MP3-quality audio in a larger container; it doesn't restore information that's already gone. A WAV made from a 128 kbps MP3 sounds exactly like that 128 kbps MP3, just in a 10× larger file.
Why convert MP3 to WAV at all?
Three common reasons: (a) you're loading the audio into a DAW (Pro Tools, Logic, Ableton) that prefers WAV for editing; (b) you're burning the audio to a CD, which uses WAV-formatted PCM; (c) a specific app or hardware (some DJ gear, in-car systems, museum installations) only accepts WAV. For listening, WAV gives you no advantage over the source MP3.
How much larger will the WAV be?
Significantly — typically 10× the MP3 size. A 5 MB MP3 becomes a 50 MB WAV. WAV stores every audio sample uncompressed at 44.1 or 48 kHz, 16-bit; MP3 compresses heavily. The file size jump is the trade-off for getting WAV-compatibility, not for getting better sound.
What sample rate and bit depth will the WAV use?
44.1 kHz 16-bit (CD quality) by default — matches what most consumer audio expects. Some MP3s were encoded at 48 kHz (especially video soundtracks) and the converter preserves that. The bit depth is always 16-bit for WAV output; higher (24-bit, 32-bit float) is overkill for content that was lossy to begin with.
Will ID3 tags from the MP3 survive?
Mostly no. WAV doesn't have a standardised tagging system the way MP3 does — there's the BWF chunk but viewer/player support is patchy. If you need tagged audio in your destination workflow, FLAC is a better lossless target than WAV.