MP4 to MP3
Drop an MP4 and pull its audio out as an MP3 — perfect for saving a lecture, podcast, interview or song from a video to listen to on the go.
Drop .mp4 file here
or click to choose
Key facts
- Input
- 1 format: MP4 (video/mp4)
- Output
- MP3 (audio/mpeg)
- Runtime
- your browser on the device
- Settings
- 0 controls; default conversion path
- File mode
- 1 input file creates 1 output file
- Cost
- $0, no account required
How to use MP4 to MP3
- 1
Open your MP4 file
Drop your MP4 file onto the page, or click to browse and pick one from your device.
- 2
Choose options
No options to configure. MP4 to MP3 uses sensible defaults.
- 3
Convert and download
Click Convert. Your MP3 file is ready to download in seconds.
MP4 to MP3 details
Sometimes you only want the sound: a talk you recorded as video, a music video you'd like as an audio file, a webinar to replay during a commute. Extracting the audio to MP3 gives you a small, universally-playable file that works on any phone, car stereo or music app, and drops the file size enormously compared to keeping the whole video.
This converter does the extraction in your browser using a WebAssembly build of FFmpeg — the same engine the pros use — so the video never uploads to a server. It demuxes the MP4, takes the audio track, and encodes it to MP3 on your own machine. That keeps private recordings private and means there's no file-size cap imposed by an upload limit.
Common searches
- mp4 to mp3
- convert mp4 to mp3
- mp4 to mp3 converter
- change mp4 to mp3
- mp4 mp3 converter
- extract audio from video
Related tools
Tools that work with the same formats — most users open one of these next.
Video Trimmer
Cut a clip from a video file — MP4, WEBM, MKV, MOV, AVI — in your browser.
Compress Video
Shrink a video file by re-encoding to H.264 with a quality preset — free, in-browser.
MP4 to WAV
Extract the audio track from an MP4 video as an uncompressed WAV file.
MP4 to AAC
Extract the AAC audio track from an MP4 video — free online, no re-encode.
MP4 to FLAC
Extract the audio track from an MP4 video as a FLAC file — free online.
WEBM to MP3
Extract the audio track from a WEBM video as an MP3 file — free online.
Frequently asked
Does the video get uploaded to extract the audio?
No. The extraction runs locally via FFmpeg compiled to WebAssembly, so your MP4 is processed in the browser and never sent anywhere.
Will the audio quality drop?
The audio is re-encoded to MP3 at a high bitrate, which is transparent for speech and very close to the source for music. You get a compact file that plays everywhere.
How big a video can I convert?
Because it runs in your browser there's no server upload limit, but very large files use more memory — for multi-gigabyte videos a desktop browser handles it best.