Convert WAV to MP3.
Turn huge WAV recordings into small MP3s, in your browser.
Drop WAV files here
or browse your files
Paste with ⌘V · or drop files anywhere on the page
Files never leave your device. Everything runs in your browser, nothing touches a server — tools you've used even work offline.
WAV stores raw samples; MP3 keeps what you can hear. At 192 kbps the MP3 is about a tenth of the WAV with no audible difference — and the conversion never leaves your machine.
How it works
- Drop files anywhere on the page, click to browse, or paste with ⌘V.
- Pick a quality or preset — or set an exact target size and let the tool find it.
- Compress, compare before/after, and download — individually or as a ZIP.
Pick a bitrate
MP3 size is pure arithmetic — bitrate times duration — so choosing a bitrate is choosing a file size:
| Content | Bitrate | An hour of audio |
|---|---|---|
| Voice, interviews, lectures | 96–128 kbps | ≈ 45–60 MB |
| Music, everyday listening | 192 kbps | ≈ 85 MB |
| Music, near-archival | 256–320 kbps | ≈ 115–140 MB |
When to keep the WAV
Keep the WAV as the master whenever editing lies ahead — every MP3 re-encode loses a little, so cut and mix in WAV, then export MP3 once at the end. For listening and sharing, the MP3 is the file to send; if it must also hit an exact size, the audio tool can aim at a target size instead of a bitrate.
Frequently asked questions
How much smaller does it get?
A stereo WAV is ~1.4 Mbps; a 192 kbps MP3 is about 7× smaller, a 128 kbps one about 11× smaller. An hour of WAV (~600 MB) becomes roughly 60–85 MB.
Will I hear the difference?
At 192 kbps and above, almost certainly not — in listening tests, that is the level where people stop telling the difference for music. Keep the WAV as an archival master if you plan to edit later; re-encoding MP3s repeatedly does degrade.
Can I convert many WAV files at once?
Yes — drop the whole batch and each file is encoded on your device, then download the results individually or as one ZIP. There are no daily caps and no file limits.
Is it private?
Yes. The audio is decoded and re-encoded entirely in your browser — recordings never leave your device, and the server does nothing but deliver this page. Voice memos, interviews, demos: none of it is uploaded anywhere. Want proof? Run one file through, switch your connection off, and run another — it still works.