WAV to MP3 Converter
Convert WAV to MP3 online for free. No upload, no sign-up and no server size limit — the conversion runs in your browser, so your audio never leaves your device.
Your file is processed in your browser and never uploaded.
How to convert WAV to MP3
- Choose your WAV file, or drag it onto the box above.
- Pick a quality setting if the page offers one — “High” is the best choice for most files.
- Click Convert to MP3 and wait a moment while your browser does the work.
- Download your MP3 file when it appears.
About this WAV to MP3 converter
WAV is an uncompressed audio format. It stores raw PCM samples, so nothing is lost, but files are about ten times larger than MP3. MP3 is the most widely supported lossy audio format. It was standardised in the early 1990s and almost every phone, car stereo, browser and media player can play it. This converter turns WAV files into MP3 right in your browser, so your audio stays on your device.
Why convert WAV to MP3?
- Cut file size dramatically: a 4-minute WAV song is roughly 40 MB, while the same song as MP3 is about 4–6 MB.
- Fit more music on a phone, USB stick or player.
- Upload faster and stream without buffering.
Things to know
- WAV is lossless and MP3 is lossy, so this conversion permanently reduces file size by discarding detail most listeners cannot hear.
- Keep your WAV original if you may need to edit or re-export later.
WAV vs MP3
| WAV | MP3 | |
|---|---|---|
| Full name | Waveform Audio File Format | MPEG-1 Audio Layer III |
| Type | Lossless audio | Lossy audio |
| Best for | editing, mastering, sampling and archiving source recordings | music libraries, podcasts, voice memos and anything you want to play everywhere |
| Compatibility | Universal on desktop, mobile and in every digital audio workstation | Universal — Windows, macOS, Linux, iOS, Android, all browsers, cars and smart speakers |
Frequently asked questions
How do I convert WAV to MP3 for free?
Open this page, select your WAV file, click convert and download the MP3. No account, no app and no payment are needed.
Are my files uploaded to a server?
No. The conversion runs inside your browser using WebAssembly, so your WAV file never leaves your device. That also means there is no server-side size limit — only your device’s memory.
Will I lose quality converting WAV to MP3?
A little, by design — MP3 is lossy. At the High setting most people cannot tell the difference from the WAV original.
What is the difference between WAV and MP3?
WAV (Waveform Audio File Format) is best for editing, mastering, sampling and archiving source recordings. MP3 (MPEG-1 Audio Layer III) is best for music libraries, podcasts, voice memos and anything you want to play everywhere.
Is there a file size limit?
There is no upload limit because nothing is uploaded. Very large files (several hundred MB) can be slow or run out of memory on phones, so use a desktop browser for those.