WAV to MP3
To convert WAV to MP3, choose your WAV files, pick a bitrate (192 kbps is a great default) and press Convert. The LAME MP3 encoder runs on your device, so nothing is uploaded.
- ๐ Runs on your device
- โค 0 bytes uploaded
- ๐ด Works offline
- โ Free, no sign-up, no watermark
- โฌ 1 MB engine, first use only
How to use WAV to MP3
- Choose or drop your WAV files.
- Pick a bitrate.
- Press Convert.
- Download the MP3s.
Is it private?
Yes. WAV to MP3 runs entirely in your web browser using your device's own processor. Your files are never uploaded to Nolo or anyone else, and the page cannot send them anywhere: its security policy only allows it to talk to nolotools.com, which has no place to receive files. Results are kept encrypted on your device for 60 minutes in Your files, then deleted automatically, or straight away with Delete all. How Nolo works.
Questions and answers
Are my recordings uploaded?
No. Everything happens inside your browser with its built-in media engine (WebCodecs). Your recordings never leave your device, and the page works offline once loaded.
How much smaller is MP3?
A CD-quality stereo WAV uses about 10 MB per minute. At 192 kbps an MP3 uses about 1.4 MB per minute, around 7 times smaller.
Which WAV files work?
Standard PCM WAV files (8, 16, 24 or 32-bit, including float), mono or stereo. Surround files are mixed down to stereo.
Which bitrate should I choose?
192 kbps for music, 128 kbps or Mono for speech. 320 kbps if you want the highest MP3 quality.
Is it really free?
Yes: no account, no watermark, no limit on file count.