Notes:
• Files are processed locally — nothing is uploaded
• Encoding progress is shown accurately
• Best performance on Chrome or Edge
• Large videos may take longer to convert
Free MP4 to MP3 Converter Online
This MP4 to MP3 converter allows you to extract audio from MP4 video files directly in your browser.
The entire conversion happens on your device, keeping your files private and secure.
Why Use This MP4 to MP3 Converter?
100% browser-based conversion
No uploads or server processing
High-quality MP3 audio output
Fast and free to use
No registration required
How to Convert MP4 to MP3
Select an MP4 video file
Click the convert button
Wait for the conversion to finish
Download your MP3 file
Privacy & Security
Your files are never uploaded to any server. All processing takes place locally in your browser.
Once you close this page, all data is removed from memory.
Frequently Asked Questions
Does this MP4 to MP3 converter upload my files?
No. All conversion happens locally in your browser.
Is this MP4 to MP3 converter free?
Yes, it is completely free to use.
Can I convert large MP4 files?
Yes, but large or long videos may take more time and memory.
Can I convert YouTube videos?
No. Only MP4 files stored on your device are supported.