Free tool

WAV to MP3 converter.

Shrink a large WAV into an MP3 that is easy to email, upload or play anywhere. Pick the quality from 128 to 320 kbps. It runs in your browser, so nothing is uploaded.

This runs in your browser. Your files are never uploaded.

How it works

Three steps, nothing to install.

01 / Drop

Choose the WAV file

Drag it in or click to pick it. It is read from your own disk.

02 / Convert

Turn it into MP3

Press convert. Pick the MP3 quality first if you like. It runs in the page.

03 / Save

Download it

Play the result in the page, then download it.

Questions

Good to know.

Is my file uploaded?

No. It is converted in this tab with your browser, so the file never leaves your computer. MP3 files are made with a WebAssembly build of the LAME MP3 encoder.

What is a WAV file?

WAV is uncompressed sound. It keeps every detail, so files are large: about 10 MB a minute for CD-quality stereo. Editors such as GarageBand and Logic work with it.

Why convert to MP3?

MP3 is compressed sound that plays on almost every phone, car stereo, player and website.

Does it lower the quality?

MP3 leaves out detail most people cannot hear, so the file becomes many times smaller. Pick 256 or 320 kbps to keep the most.

Is there a size limit?

The file is handled in your browser's memory, so very large files can fail. Close other tabs and try again.

Which browsers work?

Current Chrome, Edge, Safari and Firefox.