MP4 to MP3 Converter
Pull the audio out of any MP4 video and save it as MP3 — lectures, interviews, music sessions — without uploading the video anywhere. The extraction runs in your browser, free, with no registration or length limits.
Drop your files here - No upload required
or click to browse
How to Convert MP4 to MP3 (Step-by-Step)
- 1
Select or Drag your File
Click the "Choose Files" button to browse your folders, or simply drag and drop your MP4 file directly onto this page.
- 2
Choose MP3 as Output
Verify that your target format is set to MP3.
- 3
Local Conversion
Click "Convert." Your file is processed entirely in your browser's memory—no data is uploaded to our servers.
- 4
Instant Save
Once finished, your MP3 file will be ready for immediate save.
Pro-Tip: You can drag multiple files at once if you are doing a batch conversion!
MP4
MP4 is the world's most popular digital multimedia container format. It is used to store video, audio, and subtitles, offering universal compatibility across almost all devices and platforms.
MP3
MP3 is the most common audio compression format in history. It uses lossy data compression to significantly reduce file size while maintaining acceptable sound quality for most listeners.
How the MP4 to MP3 conversion works
The converter reads your MP4 locally, takes its audio track, and encodes it to MP3 at 192 kbps — a bitrate that keeps speech and music transparent while staying compact. A fast in-browser engine handles common codecs, with an FFmpeg-based fallback for unusual files.
Because only the audio is re-encoded, extraction is much faster than a video conversion, and long recordings work fine: processing happens in a background worker, so the page stays responsive while you convert.
Frequently asked questions
- Is there a video length or size limit?
- No hard limit — files are processed in your browser's memory, so very long videos depend on your device. Typical multi-hundred-MB recordings convert without issues.
- Does my video get uploaded somewhere?
- No. The whole extraction runs locally — important for meeting recordings and private footage. You can disconnect from the internet after the page loads.
- What audio quality do I get?
- MP3 at 192 kbps by default, encoded from the original track. If the source audio is lower quality, the MP3 simply preserves what is there — it never gets worse than the source in a noticeable way.
- Can I extract audio from several videos at once?
- Yes — drop multiple MP4s, set MP3 as the bulk output format, convert, and download everything as a zip.