Convert WAV (or M4A) to MP3

Shrink your audio recordings by converting them to MP3, which plays everywhere.

🔒 Your files never leave your device: the conversion runs in your browser.

    How it works

    1. Click “Choose files” or drop your files into the box.
    2. Adjust the options if needed (quality, resolution, pages…).
    3. Click “Convert”: everything happens on your device, in a few seconds.
    4. Download the result (or all files at once as a .zip).

    WAV to MP3 : what to know

    A WAV file takes about 10 MB per minute; the same sound as a 192 kbps MP3 takes about 1.4 MB. Converting is ideal for voice recorder files, iPhone voice memos (M4A), music demos or podcasts. Encoding happens on your device.

    Frequently asked questions

    Which quality should I choose?

    192 kbps for music, 128 kbps for speech, 320 kbps for maximum quality.

    Are iPhone voice memos supported?

    Yes, .m4a files are accepted and converted to MP3.

    Is MP3 worse than WAV?

    MP3 drops details you can't hear to save space. At 192 kbps and above the difference is very hard to hear.

    Are my files uploaded to a server?

    No. The conversion is done by your browser, on your computer or phone: your files are never sent over the Internet or kept by Tooleon. You can even go offline once the page has loaded.

    Is it really free?

    Yes: free, no sign-up, no watermark and no limit on conversions. The site is funded by ads.

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