Convert MP4 to MP3
Convert MP4, MOV, WEBM and MKV videos to MP3 in your browser. Choose 64–320 kbps. Free, no upload, no sign-up, no watermark.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: MP4 to MP3
- Select one or more videos.
- Pick the MP3 quality.
- Download your MP3.
Often you only need the sound of a video: a lecture, podcast recording, interview or your own music performance. Extracting the audio to MP3 makes it small and playable on any device – and here the video never leaves your computer or phone.
Common uses
- Listen to recorded lectures or meetings on the go.
- Extract your own music or voice recordings from a video.
- Create audio versions of webinars for podcasts.
Tips for best results
- 192 kbps is plenty for music; 64–96 kbps is fine for speech.
- Only convert content you own or have permission to use.
Choosing quality
Most video soundtracks are AAC at 128–256 kbps. Exporting MP3 at 192 kbps preserves virtually all of that quality; choosing 320 kbps will not improve audio beyond the source. For lectures and voice, 96 kbps keeps files compact.
Respecting copyright
Only extract audio from videos you created or have permission to use. Downloading copyrighted music from streaming services usually breaks their terms of service.
Why use FreePDF for MP4 to MP3?
| FreePDF | Typical upload-based sites | |
|---|---|---|
| Files uploaded to a server | No – processed on your device | Yes |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Watermark on output | Never | Sometimes |
| Works offline after loading | Yes, for most tools | No |
Frequently asked questions
Which videos work?
Any video your browser can play – MP4, MOV, WEBM and most MKV files.
Are videos uploaded?
No. The audio is extracted by your browser on your device.
Which videos work?
Any video your browser can play – MP4, MOV, WEBM and most MKV files.
Is MP4 to MP3 really free?
Yes. Every tool on FreePDF is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. FreePDF processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. FreePDF works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.