Convert MP4 to MP3 and extract the audio from MOV, MKV, WebM and other videos, then download it as an MP3 — converted right in your browser. Nothing is uploaded; your file stays on your device.
Conversion runs entirely in your browser with ffmpeg.wasm — your file is never uploaded.
Your video is processed entirely in your browser with ffmpeg.wasm — it never gets uploaded to a server.
Free to use with no account and no watermark. Choose 128, 192 or 320 kbps output quality.
Extract audio from MP4, MOV, MKV, WebM, AVI and more, straight to a downloadable MP3.
Drag your MP4 in or click to pick a video file — MOV, MKV and WebM work too.
Select 128, 192 or 320 kbps for the output audio.
Extract the audio to MP3, then preview and download — all in your browser.
Drop your video onto the box (or click to browse), pick an audio quality, and press ‘Extract audio to MP3’. When it finishes you can preview and download the MP3 — all without uploading anything.
No. The conversion runs entirely in your browser using ffmpeg.wasm, so your file never leaves your device and stays completely private.
Most common formats work, including MP4, MOV, MKV, WebM, AVI and more — anything ffmpeg can read. The output is always a standard MP3.
You can export at 128 kbps (smaller file), 192 kbps (recommended balance), or 320 kbps (best quality).
The first time you convert, your browser downloads the ~30 MB conversion engine. It's cached afterwards, so later conversions start much faster.
There's no fixed limit, but because everything runs locally, very large files use more memory and take longer — especially on phones.
Drop your MP4 onto the box (or click to browse), choose an audio quality, and press ‘Extract audio to MP3’. The MP4 is converted to MP3 right in your browser and you can download the result — no software to install and nothing uploaded.
Yes. This is a fully online MP4 to MP3 converter that runs in your browser, so there's nothing to download or install. It also works the same way on Windows, Mac, Android and iPhone.