Pull the soundtrack out of an MP4 video and save it as an MP3. Use it for a lecture you want to listen to on the go, a song from your own video, a voice recording made with your phone camera, or audio you want to edit separately.
MP4 vs MP3: what changes
An MP4 holds both picture and sound, so it is large and needs a video player. An MP3 holds only the sound, is a small fraction of the size, and plays on every phone, car stereo, speaker and music app. The MP3 here is saved at 192 kbps, a common high-quality setting for music and speech.
When to convert MP4 to MP3
Convert when you only need the audio: listening without the screen on, putting a talk or podcast on your phone, cutting a ringtone, sending a voice message from a recorded video, or importing sound into an audio editor.
Before you convert
The audio inside most MP4 files is already compressed (usually AAC), so converting to MP3 cannot make it sound better than the original. Videos without a sound track produce an error. Only convert videos you made yourself or have the right to use.
Tips for converting MP4 to MP3
Upload time depends on your connection, so on mobile data a large video can take a while. Trimming the video to the part you need first makes everything faster. Want a ringtone? Convert to MP3 here, then trim it to 30 seconds in a free audio editor.
Convert MP4 to MP3 on any device
On Android, tap the upload box and choose the video from Gallery or Files. On iPhone, choose Photo Library in the menu that appears. On a computer, drag the MP4 onto the box. The MP3 downloads to your usual Downloads folder.
Common problems and fixes
My video is over 200 MB
Trim the part you need in a video editor, or export the video at a lower resolution first. Only the sound is kept anyway.
The MP3 is silent
Some screen recordings and muted clips have no audio track. Play the video with sound on before converting to check.
Can I save music from YouTube or other sites?
Only convert videos you own or have permission to use. This tool works on files on your device; it does not download from streaming sites.
MP4 to MP3: output details
| You upload | MP4 (.mp4, .m4v), usually from phones, cameras and downloads |
|---|---|
| You get | MP3 at 192 kbps |
| Kept | full length; one stereo or mono track |
| Size limit | 200 MB per file |
Frequently asked questions
What quality is the MP3?
192 kbps, which is the setting most people use for music. Speech and lectures sound clear at this level, and one minute takes about 1.4 MB.
Is the video picture kept?
No. Only the sound is saved, which is why the MP3 is so much smaller than the MP4.
Can I convert an MP4 to MP3 on my phone?
Yes. This page works in Chrome, Safari and every modern mobile browser. Nothing needs to be installed.