Convert WAV to MP3
Turn uncompressed WAV recordings into MP3s a tenth of the size.
Drop a file to start
Runs in your browser. Nothing is uploaded.
WAV stores every sample exactly as it was recorded, which is why it is the format recorders and editors write and why a ten-minute stereo recording is a hundred megabytes. MP3 stores an approximation that most ears cannot tell apart, at around a tenth of the size, and it is the format that plays on absolutely everything.
That combination is why this is the most-run audio conversion there is. A voice memo, a lecture recording, an interview or a rehearsal take is a WAV on the device and needs to be an MP3 to be sent anywhere.
The encoder is LAME, the same one behind most of the MP3s in the world, compiled to WebAssembly and fetched only when a page actually asks for MP3 — no browser will encode MP3 on its own. It runs on your machine, so nothing is uploaded and there is no queue, no size cap and no account.
Step by step
- 1Drop in your WAV files.
- 2Choose how much quality to keep.
- 3Press Convert, then download.
Questions
How much smaller is an MP3?
Around a tenth of the WAV at high quality, and less again at medium. A ten-minute stereo WAV of about 100 MB lands near 10 MB.
Will I hear the difference?
At high quality, very rarely, and not at all on speech. If the recording is going to be edited further, keep the WAV as your master.
Is there a file size limit?
None imposed by us. The work happens in your browser, so the ceiling is your machine’s memory rather than a plan tier.