# MP3 to WAV Convert MP3 to uncompressed WAV for editing or mastering. Free, no signup, and the file is decoded on your device rather than uploaded. Canonical page: https://filetity.com/mp3-to-wav ## Capabilities - Free: Yes, with no watermark and no page limit. - Account required: No. There is no account system. - Processed on device: Yes. The file is read by your browser and never uploaded. There is no server to send it to. - Formats: MP3 in. WAV out, 16 bit PCM, at the source's own sample rate and channel count. - Limits: WAV is uncompressed, so expect roughly 10 MB per minute of stereo audio. The size is shown before you convert, because a long album becomes a very large file. - Mobile: Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser. - Offline: Yes, once the page has loaded. The tool keeps working with no network connection. ## Questions ### Will this restore the quality the MP3 lost? No, and nothing can. MP3 compression permanently discards parts of the signal, and decoding it to WAV recovers the file size but not the sound. What you get is exactly what the MP3 plays, stored without further loss, which is what editing software wants to work from. ### How large will the WAV be? About 10 MB per minute for stereo at 44.1 kHz, so a four minute track is roughly 42 MB and an hour long recording is around 600 MB. The estimate is shown before you press anything, because this is the one conversion on the site where the output is dramatically bigger than the input. ### Why would I want a WAV at all? Editing software and hardware samplers often want uncompressed audio, and every extra encode of an MP3 during an edit and export cycle loses a little more. Converting once to WAV and working from that means the compression happens only at the end. ### What bit depth and sample rate do I get? 16 bit PCM at whatever sample rate the MP3 was, which is usually 44.1 kHz. That matches what an MP3 actually decodes to, so nothing is invented; writing 24 bit would add zeros rather than detail. ### Can my phone open the result? Yes, though a WAV is a poor choice for a phone. Every mobile player handles the format, but the files are ten times larger than the MP3 you started with and sound identical, so this conversion is for editing rather than for listening. ## Related tools - [WAV to MP3](https://filetity.com/wav-to-mp3): Convert a WAV recording to MP3, around a tenth of the size. - [Audio Joiner](https://filetity.com/audio-joiner): Join several audio files end to end, in the order you choose.