Preview extracted audio--:--
Free online audio tool
MP4 to MP3 Converter
Extract the audio from an MP4 video and save it as a widely supported MP3.
1 Choose a video
File name-
Duration--:--
File size-
2 Output format
This page is preset for MP3 extraction.
3 Extract and download
Ready0%
Your video is processed locally and never uploaded to a server.
How to extract audio from video
- Choose an MP4, MOV, WebM, MKV, or another video file.
- Select the audio output format you want.
- Extract the audio, preview it, and download the result.
Extract an MP3 from an MP4 video
This tool takes the audio track inside an MP4 and creates an MP3; video frames are not included. Select the file, confirm its duration and size, process it, then preview and download a filename ending in _audio.mp3.
When an audio-only copy is useful
Listen to your own lecture video without the picture, make an audio copy of filmed interviews, or review dialogue before editing. Only process videos you own or have permission to use.
Compatibility and quality details
The page is focused on MP4 input and MP3 output. If the MP4 contains AAC or another lossy stream, creating MP3 requires another encode and may slightly change the sound. Check the preview and keep the original video. Its data is not sent to FreeAudioKit servers.
Frequently asked questions
Does this convert the entire MP4 to MP3?
It extracts only the audio track from the MP4 and saves it as an MP3.
Is my MP4 uploaded?
No. The file is processed locally in your browser.