MP4 to MP3
MP4 to MP3 is a free online video tool for changing MP4 files into MP3 files. MP4 to MP3 accepts 1 MIME type, returns audio/mpeg, includes 0 settings, and runs in your browser on the device.
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
First, MP4 to MP3 reads MP4 source files and prepares MP3 output for the video workflow. Next, MP4 to MP3 keeps the conversion path simple with no extra controls. Additionally, Files and text stay in the browser session.
Pull the audio track out of an MP4 and save it as a high-quality VBR MP3 (around 190 kbps, ffmpeg quality 2). The video stream is discarded; this is the right tool when you want a podcast, lecture, music clip, or voice memo extracted from a video file. The conversion runs locally via ffmpeg.wasm, so your file never leaves your device. Performance depends on your CPU: extracting audio is typically faster than re-encoding video, but very long or 4K sources may still be slow. For best results keep inputs under about 500 MB.
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
What is MP4 to MP3?
MP4 to MP3 is a free online video tool for changing MP4 files into MP3 files. MP4 to MP3 accepts 1 MIME type, returns audio/mpeg, includes 0 settings, and runs in your browser on the device.
What files does MP4 to MP3 accept and create?
MP4 to MP3 accepts MP4 files (video/mp4) and creates MP3 files (audio/mpeg). There are no required settings before conversion.
Do my files and data stay private?
Yes. MP4 to MP3 runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.
How do I use MP4 to MP3?
Open MP4 to MP3, drop in your MP4 file, choose any options, and click Convert. Your browser does the work locally and produces a MP3 file you can save right away.
What is the maximum file size for MP4 to MP3?
Because MP4 to MP3 runs in your browser, the maximum size depends on your device's available memory. Most modern phones and laptops handle files up to a few hundred MB without issues.