Convert MP3 to WAV
Drop an MP3 and get an uncompressed WAV back: ready for editing, mastering, or any tool that needs raw PCM audio. The first time you use this tool the audio engine downloads once (~24 MB); after that the browser uses its cached copy. Your file never leaves your device.
About MP3 to WAV
MP3 is a lossy compressed format: it shrinks audio by discarding detail the ear is least likely to notice, which is why MP3 files are small. WAV is the opposite, uncompressed linear PCM that stores the full decoded waveform. Converting MP3 to WAV decodes the compressed audio and writes those raw samples into a WAV container. It will not restore detail the MP3 already discarded, but it gives you a universally editable, uncompressed file that audio software and hardware accept without further decoding. Expect the WAV to be several times larger than the MP3, since it is no longer compressed.
Is it private?
Yes. The converter is WebAssembly and browser APIs running on your own machine. Nothing is uploaded, stored, or seen by us. There is no server to send files to.
Frequently asked questions
- Does converting MP3 to WAV improve the quality?
- No. An MP3 is already lossy, so converting to WAV cannot restore detail the MP3 discarded. The WAV stores the full decoded waveform exactly as the MP3 plays it, just without further compression.
- Why is the WAV file so much larger than the MP3?
- WAV is uncompressed linear PCM, so it stores every sample of the decoded audio. Expect the WAV to be several times larger than the MP3, since it is no longer compressed.
- Are my files uploaded to a server?
- No. The conversion runs on your device using WebAssembly and browser APIs. Your audio is never sent anywhere. The first time you use the tool the audio engine downloads once (about 24 MB), then the browser uses its cached copy.
- Is it free, and do I need an account?
- It is free with no watermarks, no daily caps, and no sign-up. Drop a file, convert it, and download the result.