★ Video to MP3
Free video to MP3 converter
Upload any video file and extract its audio as an MP3 — processed entirely in your browser, nothing is ever uploaded anywhere.
Upload a video (MP4, MOV, WEBM, MKV…) to extract its audio as MP3
Need just the audio from a video file — a lecture, a podcast clip, a home video — without installing software or uploading it to a stranger's server? This converter runs ffmpeg directly inside your browser using WebAssembly, the same audio/video engine professional tools use, and turns your video into an MP3 you can download immediately.
Works with MP4, MOV, WEBM, MKV and most common video formats. The first time you use it, your browser downloads a ~30MB processing engine once; after that, conversions run instantly without needing it again until you reload the page.
Why use this converter?
100% private
Your video never leaves your device — everything is processed locally in your browser.
No file size limit from us
Only limited by your device's own memory — no server-side upload caps.
Multiple quality levels
Pick a high, medium, or low bitrate MP3 depending on whether you need quality or a smaller file.
Frequently asked questions
Is my video uploaded anywhere?
No. Conversion happens entirely on your device using WebAssembly — nothing is sent to a server.
What video formats are supported?
MP4, MOV, WEBM, MKV, AVI and most common formats that browsers or ffmpeg can read.
Why does it take a moment to start the first time?
Your browser downloads the ~30MB processing engine once. It's cached after that, so later conversions in the same visit start instantly.
Is there a cost or a limit?
No, it's completely free with no conversion limit — processing runs on your own device, not our servers.