Batch MP4 conversion
Add one MP4 or many at once—each file exports as a separate audio download.
Free Online MP4 to MP3
Convert MP4 to MP3 in your browser—free, no install, no upload. Drag and drop MP4 files, choose MP3/M4A/WAV/AAC output, and download. Processing stays on your device for privacy.
Drag & drop video files here
or click anywhere in this area to choose files
MP4, MOV, MKV, WebM, AVI and more · Max 500 MB per file
Processed locally in your browser — files never leave your device. Need trim, mix audio tracks, or faster batch export? Try the Windows desktop app.
Why Use This Free Online MP4 to MP3 Converter?
Extract soundtracks, podcasts, and music from MP4 files—same privacy-first approach as our other online tools.
Multiple audio formats
Choose MP3, M4A, WAV, or AAC depending on how you plan to use the extracted audio.
Privacy-first
Everything runs on your device in the browser—your MP4 files never leave your device.
Supported Input Formats
Extract audio from MP4 and other common video containers for podcasts, ringtones, and music libraries.
Video inputs
MP4, MOV, MKV, WebM, AVI, MPEG, and other common video files up to 500 MB each.
Shorter clips process faster in the browser.
Audio output
Export as MP3 (192 kbps), M4A (AAC), WAV (uncompressed), or raw AAC—audio only, no video track.
Output filename keeps the original base name with a new audio extension (e.g. clip.mp3).
How to Convert MP4 to MP3 Online in 3 Steps
From MP4 video to downloadable MP3—in minutes.
1
Add MP4 files
Drag and drop MP4 files or click Choose Files. Multiple files can be queued at once.
2
Choose audio format
Select MP3, M4A, WAV, or AAC output, then click Convert to MP3.
3
Download
Save your audio files directly to your device when processing completes.
More Free Video & Audio Tools
Process files instantly in your browser — 100% free, no installation, and no registration required.
MP4 to MP3 FAQ
Answers to common questions about converting MP4 to MP3 in your browser.
Is this online MP4 to MP3 converter free?
Yes. Convert MP4 to MP3 at no cost without creating an account. Add your MP4 files and click Convert to MP3.
Are my MP4 files uploaded to your servers?
No. Processing runs locally in your browser. Your MP4 files are processed on your device and are not sent to Videoradius servers.
Can I convert MP4 to MP3 online?
Yes. Add an MP4 file, choose MP3, M4A, WAV, or AAC output, and click Convert to MP3 to download the extracted audio.
Which audio formats can I export from MP4?
Export as MP3 (192 kbps), M4A (AAC), WAV (uncompressed), or raw AAC—pick the format that fits your workflow.
What if my MP4 has no audio track?
MP4 files without audio cannot be converted. Add an MP4 that includes a soundtrack or voiceover.
What is the maximum MP4 file size?
Each file can be up to 500 MB. Larger or longer MP4 files may take longer depending on your device and browser.
Need Pro Video Tools on Windows?
Videoradius Video Converter supports 300+ formats, GPU acceleration, batch processing, and 100% offline processing.