MP4 to MP3
Extract the audio from an MP4 video into an MP3 file, right in your browser
🔒 Files are never uploaded to a server — everything runs right in your browser.
Drag & drop your file here
or click to choose from your computer
Output format
🎵 Audio only
The video track is dropped and only the sound is kept, encoded as a clear 192kbps MP3.
⚡ Runs on your device
The first run downloads a ~25MB engine, then the video is processed in your browser with no upload.
🔒 Private
The file never leaves your device, so it is safe even for personal videos, meetings or lectures.
MP4 to MP3 Online
This MP4 to MP3 tool pulls the audio out of an MP4 video and saves it as a clear 192kbps MP3. Handy for grabbing music, or keeping the audio of a meeting or lecture without the video.
Everything runs inside your browser with ffmpeg.wasm, so the video is never uploaded. The first run downloads a ~25MB engine, which is then cached for next time.
How to convert MP4 to MP3
- Drag and drop or choose an MP4 video file.
- Click Convert and wait (the first run downloads a ~25MB engine).
- Download the resulting MP3 file.
Key features
- Clear 192kbps MP3 output.
- Runs fully in the browser with no upload.
- Also accepts other video formats such as MOV, WEBM, MKV.
FAQ
Is my file uploaded anywhere? No. Extracting the audio runs with ffmpeg.wasm in your browser and the video never leaves your device.
Why is the first run slow? The browser downloads a ~25MB engine the first time. It is then cached, so later runs are faster.
Can I convert a long video? Yes, but longer videos use more memory and time and can be slow on weaker devices.