Convert · MP4 → MP3
Convert MP4 to MP3 — right in your browser
Drop an .mp4 video and pull out just the audio as an .mp3 — for podcasts, music, lectures or voice notes. It's extracted on your own device, so the file is never uploaded.
Why convert MP4 to MP3?
Sometimes you only want the sound: a song, an interview, a lecture, a voice memo. Extracting to MP3 drops the video entirely and keeps just the audio in a small file that plays in every music app and on every device.
Most converters upload your video to a server first. VidKit doesn't — the audio is extracted locally in your browser, so nothing is stored or logged, and even long recordings don't need a slow upload.
Frequently asked questions
Is my video uploaded anywhere?
No. The extraction happens entirely in your browser, on your own device. There's no server that could receive the file — check your browser's Network tab while it runs and you'll see zero bytes leave.
What MP3 quality do I get?
You can pick the bitrate before converting — from 128 kbps (small) up to 320 kbps (best quality). 192 kbps is a good default for speech and most music.
Can it handle a long video?
Yes. Audio is tiny compared with video, so even hour-long recordings extract quickly and stay small.