Convert WAV to MP3 — Free, No Upload
Shrink an uncompressed WAV to a tenth of its size or less.
Drop a file here
or click to choose a file
Runs on your device Your file is processed by your own browser and is never uploaded to a server.
Short answer
A WAV file can be converted to MP3 for free in a web browser. WAV stores uncompressed PCM at roughly 10 MB per minute, so encoding it to MP3 at 192 kbps typically removes more than 85% of the size while remaining transparent to most listeners. The conversion runs on the visitor's own device, so no file is uploaded and there is no size limit.
At a glance
| Accepts | WAV (PCM, any bit depth) |
|---|---|
| Produces | MP3 (LAME) |
| Processing | In your browser |
| Price | Free, no limits |
| Account | Not required |
WAV is what recorders, DAWs and voice apps write when nothing has been configured, because it is simple and lossless. It is also enormous: a one-hour interview is well over half a gigabyte, which is too large to email, awkward to store on a phone and slow to move anywhere.
MP3 is the right destination once the recording is finished and no further editing is planned. Use 320 kbps if the WAV is a music master worth keeping at near-transparent quality, 192 kbps for general use, and 128 kbps for speech that is going straight to a listener.
How to use it
- 1
Add the WAV file
Drop in the .wav recording. It stays on your device.
- 2
Choose the bitrate
320 kbps for music masters, 192 kbps for general use, 128 kbps for speech.
- 3
Convert
The PCM audio is encoded to MP3 on your device.
- 4
Download the MP3
Save the much smaller file. The WAV is untouched.
Frequently asked questions
How much smaller is an MP3 than a WAV?
At 192 kbps, roughly one eighth the size — a 60 MB WAV becomes about 8 MB. At 128 kbps it is closer to one eleventh.
Does converting WAV to MP3 lose quality?
Yes. WAV is lossless and MP3 is not, so this is one generation of lossy encoding. At 192 kbps and above the difference is inaudible to most listeners on most equipment.
Should I keep the WAV?
If it is an original recording or a master, yes — keep it as the archive copy and use the MP3 for sharing. Every further edit made from the MP3 compounds the loss.
Are 24-bit and 32-bit WAV files supported?
Yes. Higher bit depths and sample rates are decoded and encoded normally; MP3 output is 16-bit equivalent regardless, which is what the format defines.
Is the file uploaded anywhere?
No. Even a very large WAV is read straight into the page and encoded there. Nothing is transmitted.