About this tool
WAV recordings are perfect but bulky: ten minutes is about 100 MB. Converting to MP3 at 192 kbps shrinks that to around 14 MB with no audible difference for most listeners, making the file easy to email, upload, or play on a phone.
About the formats: WAV stores uncompressed PCM audio: perfect quality, but around 10 MB per minute. It is the format audio editors, samplers, and studios expect. MP3 is the universal lossy audio format. Practically every device, car stereo, and app made in the last 25 years plays it, and at 192-320 kbps it is indistinguishable from the original for most listeners.
Everything happens inside your browser. Your file is never uploaded to a server: the conversion runs on your own device using WebAssembly, and the result is downloaded straight from memory. Close the tab and nothing is left behind.
How to use it
- Drop your WAV files into the box above, or click to browse. Nothing is uploaded.
- Adjust the options if you want; the defaults suit most files.
- Click Convert to MP3 and wait a moment.
- Download the results individually or all at once as a ZIP.
Frequently asked questions
Is WAV to MP3 lossy?
Yes, MP3 discards inaudible detail. At 192-320 kbps the result is indistinguishable from the WAV for nearly everyone.
How much smaller will the MP3 be?
Roughly 85-90% smaller at 192 kbps.
Is this really free?
Yes. The site is supported by ads, and there are no limits on how many files you convert.
Are my files uploaded anywhere?
No. The converter runs entirely in your browser. Files stay on your device, which also makes it faster than upload-based converters for anything larger than a few megabytes.
Is there a file size limit?
The only limit is your device's memory. Images and audio of any normal size are fine; for video, files under about 500 MB work well on most laptops and phones.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, and Safari on desktop and mobile. Very old browsers without WebAssembly support will not work.