Convert WAV to MP3 online, free
To convert WAV to MP3, drop the WAV on the box above, keep MP3 selected, choose a bitrate and click “Convert”. The MP3 is encoded in your browser with the LAME encoder compiled to WebAssembly; nothing is uploaded.
How much smaller will it be?
CD-quality WAV takes about 10.6 MB per minute. As MP3 it takes about 1 MB per minute at 128 kbps (11 times smaller), 1.4 MB at 192 kbps (7 times) and 2.4 MB at 320 kbps (4 times).
Which bitrate to choose
- 128 kbps — speech, voice recordings, podcasts
- 192 kbps — music in high quality, the default
- 320 kbps — maximum quality, for archiving music as MP3
Recordings from voice recorders and studios
Voice recorders, field recorders and DAWs save WAV, which is too big to send. Converting to MP3 makes recordings easy to email or share; drop a whole folder of them to get all the MP3s in one ZIP.
To pick a size rather than a bitrate, use the audio compressor, which shows the estimated size before you start.
Other conversions
Frequently asked questions
How do I convert WAV to MP3?
Drop the WAV on this page, keep MP3 selected, choose a bitrate and click Convert, then download the MP3. The conversion happens in your browser.
How much smaller will the MP3 be?
About 11 times smaller at 128 kbps, 7 times at 192 kbps and 4 times at 320 kbps, compared with CD-quality WAV.
Which bitrate should I choose?
128 kbps for speech, 192 kbps for music, 320 kbps if you want the best quality MP3 can give.
Can I convert a whole folder of WAV files?
Yes. Select or drop all the files: they are converted one after another, and you can download all the MP3s as a ZIP.
Is my WAV uploaded?
No. The file is converted in your browser and never leaves your device.