# MP4 to MP3 converter

Turn any video into an MP3 in seconds. Free, no sign-up.

Web page: https://sloosh.ai/tools/video-to-mp3

## How to convert MP4 to MP3

1. **Add the video.** An MP4, MOV, WebM or MKV file.
2. **Pick the format.** MP3 plays anywhere. WAV is lossless. M4A sits between.
3. **Play it, then download.** Listen on the page before you save it.

## Extract audio from video

To extract the audio from a video, add the file, leave the format on MP3 and press Extract audio. The picture is skipped and only the soundtrack is written out, so even a long 4K recording gives back a small file quickly. Play it on the page to check it, then download. Pick WAV instead if you will edit the sound in an audio app and want no further loss, or M4A for a smaller file that still sounds clean. Interviews, talks, voiceovers and screen recordings are the usual reasons. If the video has no sound at all, you are told straight away.

## Video to MP3, WAV or M4A

MP3 plays on every phone, car and app. WAV is the format audio editors like best, at the cost of size. M4A is smaller than WAV and widely supported on Apple devices. Whichever you pick, the bitrate never goes above the video's own sound.

## What people use it for

- **Audio for a podcast or voiceover edit.** Recorded the interview on camera? Pull the sound out once and edit it in your audio app, instead of dragging a huge video file around.
- **A talk or lecture for your commute.** The soundtrack of a 500 MB recording is usually under 10 MB, so it fits on your phone and keeps playing with the screen off.
- **Audio for transcription or captions.** Transcription tools want audio, not picture. Send them the MP3 and it uploads in a fraction of the time.

## Questions

### How do I convert MP4 to MP3?

Add the MP4 and press Extract audio. The MP3 plays on the page before you download it.

### Which video formats work?

MP4, MOV, WebM and MKV. If a file cannot be read, you are told as soon as you add it.

### Can I save as WAV or M4A instead?

Yes. WAV keeps the decoded sound with no further loss and is the biggest file, which suits editing. M4A sits between the two, where your browser can write it.

### Will the MP3 sound worse than the video?

Slightly, because the sound in a video is already compressed and MP3 compresses it again. The bitrate never goes above the source's, so the file is not padded out.

### Why is the MP3 so small?

Almost all of a video file is picture. Once that is gone, the sound alone is usually a few megabytes.

### What if my video has no sound?

You are told there is no audio track as soon as you add it, instead of getting an empty file.

### Is it legal to extract audio from a video?

It depends on the video. Your own recordings and anything licensed for reuse are fine. A commercial soundtrack you have no rights to is not.

### Where does my video go?

Nowhere. The sound is extracted on your device and the file is saved straight from the page.

## More free tools

- [Video compressor](https://sloosh.ai/tools/compress-video.md)
- [Video to GIF converter](https://sloosh.ai/tools/video-to-gif.md)
- [Video cropper](https://sloosh.ai/tools/crop-video.md)