MP3 to WAV
Convert an MP3 to an uncompressed 16-bit WAV in your browser, keeping the file’s own sample rate, with nothing uploaded. Useful when something downstream — an editor, a mastering step, a submission spec — wants PCM rather than a compressed file.
Ready.
Where the file goes
Converters normally work by taking a copy of your recording onto a server, doing the work there and deleting it later. This one does not: the decode and the re-encode both happen in this browser tab. The tools on this site never upload your audio, so there is nothing to delete later.
Nothing is uploaded, so nothing waits behind other people’s jobs and there is no paid tier for bigger files. The limit is your own device: MP3 output streams and has no practical ceiling, while WAV output has to be built whole in memory and is capped, with the reason stated when it is.
It reads WAV, AIFF, MP3 and M4A/AAC — the formats this site’s engine already understands. It is not a YouTube downloader, it does not open DRM-protected files from a music service, and it will not pretend to read FLAC or OGG it has no decoder for.
Converting to MP3 is lossy, so the result is played back beside the original at the same position. For WAV there is nothing to compare: the container changes and the samples do not, and the page says so instead of offering a meaningless A/B.
Recording, not just converting?
Remove background noise, trim a recording to the part you want, or join takes into one file — all in the same tab, none of it uploaded.
The chapter checker measures a finished file against what ACX, Spotify, Google Play and Apple publish, and corrects what is correctable.
Straight answers
No, and that is the reason this page exists. The conversion runs inside your browser tab: the file is decoded, re-encoded and handed back without ever being sent anywhere. The tools on this site never upload your audio, so there is nothing stored to delete afterwards. The largest online converter says instead that your files are deleted from its servers a few hours after you finish — honest, and a different thing.
It reads WAV, AIFF, MP3 and M4A/AAC, and writes MP3 at 192 kbps or uncompressed 16-bit WAV. The MP3 keeps your file's own sample rate when it is one this encoder can write — 32, 44.1 or 48 kHz — and is resampled to 44.1 kHz otherwise, because below 32 kHz this encoder reports success while writing a frame header that lies about the rate. It has no FLAC, OGG or WMA decoder and does not pretend otherwise.
MP3 output streams through the encoder and has no practical ceiling. WAV output has to be built whole in memory before it can be handed back, so it is capped — a 16-bit WAV is about 5 MB per mono minute, and the page says so and refuses rather than crashing the tab. Compressed sources such as M4A are decoded whole and capped at about forty mono-minutes.
Yes — MP3 is lossy, and one more generation of it is one more generation. That is why the result is played back beside the original at the same position, so you can hear what the encode cost before keeping the file. Converting to WAV loses nothing: the container changes and the samples do not.
No. It converts files you already have, and nothing else. It is not a downloader, and it cannot open DRM-protected files from a music service.