Extract audio from an MP4
MP4 to MP3
Save the audio from an MP4 you already have. The picture is discarded, and the MP3 is created in your browser.
Audio conversion uses FFmpeg through the single-threaded @ffmpeg/core 0.12.10 build, licensed under GPL-2.0-or-later. FFmpeg. ffmpeg.wasm.
How to convert MP4 to MP3
Choose the MP4
This page accepts an MP4 only. Other audio and video types belong on the main MP3 converter.
Pick a bitrate
192 kbps fits most music and dialogue. 128 kbps is smaller. 320 kbps keeps more of the soundtrack.
Download the audio
The download starts only after the MP3 exists in this browser.
What changes in an MP4
The picture is not kept
An MP4 can hold video and audio. This conversion keeps the audio track and drops the picture. A silent video is rejected.
Files from your device
There is no address box. Convertola does not fetch an MP4 from another website. Use a file that is already on your phone or computer.
When MP4 to MP3 helps
A soundtrack you want to play
A meeting recording, a lecture, or a clip you filmed is easier to share as audio. The MP3 is smaller than the video and plays where a picture is not needed.
Other conversions
MP3 converter
Use this when the file is not an MP4.
WAV to MP3
Shrink an uncompressed recording.
M4A to MP3
Convert a voice note or Apple audio file.
MP4 to MP3 questions
Why was my file rejected?
This page accepts MP4 only, up to 150 MB. Open the MP3 converter for MOV, WEBM, MKV, M4A, AAC, WAV, FLAC, or OGG.
Can a video with no sound become an MP3?
No. If the MP4 has no audio track, there is nothing to save.