MP4 to MP3
Drop a video and pull out just the audio track as an MP3 — no upload, no watermark.
Drop a video here, or click to browse
MP4, MOV, WEBM · up to 300MB
Files never leave your device — the conversion engine runs locally in this tab.
How to convert MP4 to MP3 online
- Drop your video file into the box above (the first time, your browser downloads a small conversion engine — this only happens once per visit).
- Pick your preferred audio quality — higher kbps means better sound but a bigger file.
- Click Convert all, wait for it to finish, then download your MP3.
Why convert with stekid
Instead of uploading your video to a server, stekid loads a real conversion engine directly into your browser tab and extracts the audio locally. Your video never leaves your device.
Frequently asked questions
Why does the first conversion take longer?
The tool needs to download the conversion engine once per visit (about 25MB). After that, converting is much faster.
Is my video uploaded anywhere?
No — the entire extraction happens locally in your browser tab using WebAssembly.
What's the largest file I can convert?
Files up to 300MB are supported. Larger files may be slow depending on your device.
