Convert WAV to MP3

MP3 is a compressed format, so there is some loss — but at a normal bitrate it is inaudible for most listening, and the file ends up a fraction of the WAV size. For archival or further editing, keep the original WAV.

No. The conversion runs on WebCodecs on your own device — nothing is sent to a server, so there is no account, no quota and no waiting in a queue. Chrome, Edge and Firefox work best.

A large reduction — often around a tenth of the WAV size, sometimes more. An uncompressed WAV holds every sample raw; MP3 compresses that intelligently, so a track that is 30 MB as WAV lands a few megabytes as MP3. That is why MP3 is the format for sending and storing audio, while WAV is what you keep only while editing.

The tool encodes at a high bitrate, high enough that the result is transparent for normal listening — you will not hear the difference from the WAV. MP3 is lossy, so it discards data the ear is least likely to notice; at a high bitrate what is discarded is inaudible. If you truly need every sample intact, keep the WAV, but for playing and sharing, a high-bitrate MP3 is all you need.

Yes — there is no cap on how many you convert or how long each is, because the work runs on your own machine rather than a server with limits. A long WAV simply takes a little longer to encode. This is handy for a folder of recorded interviews or a lengthy session you want to shrink to shareable MP3s in one place.