WAV to MP3 Converter — Free Online Tool
Local audio conversion between MP3 and WAV directly in the browser without downloading to the server.
🔒 Processed entirely in your browser — nothing you enter here is ever uploaded.
The result appears on this page after you run the tool. Nothing you enter is uploaded.
Result
About this tool
This page opens the audio converter with MP3 preselected as the output format — drop a WAV recording, run the conversion and save the much smaller MP3.
WAV to MP3 compresses raw, uncompressed audio into the universally supported MP3 format, typically shrinking the file about tenfold — ideal for sharing recordings by email or messenger, publishing podcasts, or freeing up storage.
The full tool converts the other way too, and all processing happens locally in your browser — the recording never leaves your device, so even private voice notes stay private.
Example. A WAV file encoded as MP3 at the 192 kbps setting downloads as an MP3 whose duration matches the decoded source.
Limit. MP3 sample rates are only 32000, 44100 and 48000 Hz, while WAV may also use 22050, 88200 or 96000 Hz, and VBR quality is an integer from 0 to 9.