About the MP4 to MP3
MP4 to MP3 takes the sound out of an MP4 video and saves it as an MP3 file. Choose the file, pick a quality between 96 and 320 kbps, and press Convert. The page shows the estimated size before you start, plays the MP3 when it is ready and lets you download it. It also accepts MOV, WebM and MKV videos. The conversion runs inside your browser, so your video is never uploaded, and it works well on phone recordings, screen recordings, lectures and interviews you have the right to use.
Updated October 2026
How to use the MP4 to MP3
- 1Select your MP4 video, or drop it on the page.
- 2Choose a quality. For speech 128 kbps is enough; for music try 192 or 256 kbps.
- 3Pick stereo or mono.
- 4Press Convert to MP3.
- 5Listen to the MP3, then download it.
Why people convert MP4 to MP3
Often you only need the sound: a lecture to listen to while walking, a song from a concert you recorded, an interview for a podcast or a voice message that arrived as a video. An MP3 is much smaller and plays on any device or car stereo.
Get the best result
The MP3 can only be as good as the video's sound. A phone recording will not become studio quality at 320 kbps. Choose 128 kbps for speech and save space, and 192 kbps or more for music. Mono halves the data and suits a single voice.
- Speech: 96 to 128 kbps, mono
- Music: 192 to 256 kbps, stereo
- Archive: 320 kbps
Large and long videos
Hour-long videos work, but they take a while and use memory. If the page is slow on a phone, trim the video first with Trim Video, or convert on a computer. Keep the tab open until the progress bar reaches the end.
Rights and respect
Use this for your own videos and material you have permission to use. Do not extract and share copyrighted music or other people's recordings without their consent.
Other useful steps
Make the MP3 smaller with the Audio Compressor or cut silence with the Audio Silence Remover. For a plain copy of the original sound without re-encoding, use Extract Audio from Video.
Features
- Extracts the sound of MP4, MOV, WebM and MKV videos
- Quality from 96 to 320 kbps
- Estimated MP3 size
- Stereo or mono
- Preview before download
- The video stays on your device
Frequently asked questions
How do I convert an MP4 to MP3?
Select the MP4, choose the quality and press Convert to MP3. The video's sound track is decoded and encoded as MP3 in your browser, and a download button appears when it is finished.
Does it keep the video?
No. The MP3 contains only the sound. If you also want to keep the video, keep the original MP4.
Can I convert a YouTube video?
This tool works with files on your device. Only download or record videos if the owner permits it, and then convert the file here. We do not download videos from websites.
Why is my MP3 so much smaller than the video?
A video file is mostly picture. The sound is a small part of it, so an MP3 of the sound is usually a few percent of the video's size.
Can I convert only part of the video?
Convert the whole file, then cut it with the Audio Trimmer. To cut the video first, use Trim Video.
Which quality is best?
128 kbps for speech, 192 kbps for most music, 320 kbps for the best quality. If the video's own sound is low quality, a higher bitrate does not improve it.
The page says there is no sound. What now?
The video may have no audio track. Play it to check, and try another file if it is silent.
Is my video uploaded?
No. Everything happens in your browser, so private videos stay on your device.