MP4 to MP3 Converter
Take the sound track out of MP4 videos and save it as MP3, entirely on your device.
MP4 videos of any size (they are read in pieces). Files stay on your device.
How it works
- Choose your MP4 video, or drop it on the page. You can add several files at once.
- Choose MP3 quality: a bitrate (128 to 320 kbps; 192 kbps is a common balance) or leave the default.
- Click Convert. Processing happens on your device and shows progress; you can cancel at any time.
- Preview the result and download the MP3 file. With several files, download them all as one ZIP.
About MP4 to MP3 conversion
MP4 is a video container: MPEG-4 Part 14 video, usually with h.264 or h.265 video, usually aac audio. This tool reads the audio track and leaves the picture behind. The audio track is decoded and encoded again as MP3, so choose a bitrate that matches the original.
MP3 (MPEG-1/2 Audio Layer III) is a lossy format that suits music libraries, podcasts and sharing when you cannot know what the listener uses.
Size depends on the video and the MP3 settings you choose. As a guide, a 4-minute MP3 track at its typical bitrate is about 6 MB.
MP4 vs MP3
MP3 support: Plays on virtually every phone, car stereo, TV, browser and media player made in the last 25 years.
MP4 support: The most widely supported video container.
| Detail | MP4 | MP3 |
|---|---|---|
| Type | Depends on the audio codec | Lossy |
| Codec | H.264 or H.265 video, usually AAC audio | MP3 |
| Typical bitrate | audio track usually 96 to 256 kbps AAC | 128 to 320 kbps; 192 kbps is a common balance |
| A 4-minute track | varies with the video | about 6 MB |
| File extensions | .mp4, .m4v | .mp3 |
| Best for | phone videos, downloads and web video | music libraries, podcasts and sharing when you cannot know what the listener uses |
| Introduced | 2001 | 1993 |
Quality and compatibility notes
- MP3: Each re-encode loses a little more detail, and there is no true gapless support without extra tags.
- MP3 bitrate range: 128 to 320 kbps; 192 kbps is a common balance.
- Tags: MP3 stores ID3v1 and ID3v2 tags, including cover art.
Questions
Does converting MP4 to MP3 reduce quality?
A small amount of detail is discarded, which is how MP3 gets smaller. At a reasonable bitrate the difference is hard to hear.
How big will the MP3 file be?
Size depends on the video and the MP3 settings you choose. As a guide, a 4-minute MP3 track at its typical bitrate is about 6 MB.
Is my MP4 file uploaded anywhere?
No. The conversion runs in your browser on your device. The file is never sent to a server, and nothing is stored after you close the page.