Convert MP4 to MP3
Select Files
Audio, Video and Image supported. Drag or click
From MP4 to MP3 in three clicks: upload, configure, download. The entire conversion happens on your device, not on our servers — no uploads, no tracking.
How It Works
Add MP4 Files
Use the upload button or simply drop your MP4 files into the page. No size limits during the upload step.
Start the Conversion
Click convert and WeLoveConvert turns each MP4 file into MP3 right in your browser tab.
Grab Your MP3 Files
When processing finishes, every output file is ready for download — single file or zipped batch.
About These Formats
Convert MP4 to MP3 when you need just the audio from a video: turning a video podcast or Zoom recording into a podcast feed, archiving the soundtrack of a concert recording, lifting a lecture or webinar audio for distraction-free listening on the commute, or pulling vocal stems from a music video for transcription. Stripping the video track also cuts file size dramatically — a 1080p MP4 at 5 Mbps becomes a 192 kbps MP3 around fifteen times smaller. MP4 containers usually hold AAC audio, so the operation is decode AAC, then re-encode as MP3. That is a lossy-to-lossy generation, and the source codec matters more than the output bitrate: a 64 kbps AAC voice track cannot be improved by encoding the MP3 at 320 kbps. Match the MP3 bitrate to the source — 128 kbps is enough for spoken content, 192 kbps is the sweet spot for music podcasts, 256 kbps for higher-fidelity music videos. Metadata from MP4 atoms (title, artist, album when present) is mapped into ID3v2 tags, including embedded thumbnails as cover art. WeLoveConvert performs demux, AAC decode, and MP3 encode in your browser via WebAssembly FFmpeg, with no upload of potentially large video files. Tip: for long videos, expect processing time roughly proportional to the audio duration, not the file size.
Frequently Asked Questions
How do I convert MP4 to MP3?expand_more
Upload your files, confirm the conversion settings, and download your converted files. All processing happens in your browser — no server upload required.
Is this MP4 to MP3 converter free?expand_more
Yes, completely free with no hidden fees. No sign-up required, no usage limits. All conversion happens in your browser.
Is it safe to convert MP4 to MP3 online?expand_more
Your files never leave your device. All conversion happens locally in your browser using WebAssembly technology. We have zero access to your files.
Will I lose quality converting MP4 to MP3?expand_more
Quality depends on the target format and your settings. Lossless formats like PNG preserve original quality. For lossy formats like JPG, you can adjust the quality slider.
Can I convert multiple MP4 files at once?expand_more
Yes, you can convert multiple files at once. Simply drag all your files into the upload area or click to select them.
Common Issues
- infoOutput quality is capped by the source audio bitrate, not your MP3 setting
- infoAAC-to-MP3 transcode adds a second lossy generation on top of the source
- infoVideo chapters, timestamps, and subtitle tracks are dropped entirely
- infoIf the MP4 has multiple audio tracks, only the first or default track is extracted