---
title: "MP4 to MP3 Converter That Runs on Your Device | ToolSugar"
description: "Pull the sound out of an MP4 and save it as an MP3 without uploading the video. Choose from 64 to 320 kbps and download straight away."
canonical: https://toolsugar.com/tools/mp4-to-mp3
image: https://toolsugar.com/og.png
---

# MP4 to MP3

ToolSugar saves the sound from an MP4 video as an MP3 file, working entirely in your browser. The video is never uploaded, which suits large or private clips. Only the audio track is read and re-encoded. At the default 192 kbps, expect about 1.4 MB of MP3 per minute. The first use downloads a 32 MB engine from a public CDN.

Runs on your device

## How it works

1. Drop in your MP4 file.
2. Leave quality at 192 kbps, or lower it for a smaller file.
3. Press convert to MP3.
4. Download the MP3, which keeps the name of your video.

## Key facts

- **Size to expect**: About 1.4 MB per minute at 192 kbps, and 2.4 MB per minute at 320 kbps.
- **What is discarded**: The picture. The MP3 holds sound only, and your original MP4 stays as it was.
- **Audio track**: The first track in the file. MP4s with no sound get a clear message instead of an empty MP3.

## Common uses

- Turning a recorded talk or lecture into something to hear on a commute.
- Keeping the song from a music video you filmed yourself.
- Sending someone the audio of a clip without the large video.

## Questions

### Will a long MP4 take long?

The time depends on the length of the audio and the speed of your device, since nothing runs on a server. The picture is not decoded, so the work goes into the sound.

### What if I want the original audio with no re-encoding?

Use the audio extractor and choose Original. It copies an AAC track from an MP4 into an M4A file with no quality loss.

[Read the MP4 to MP3 guide](https://toolsugar.com/blog/how-to-convert-audio-files)

## Related tools

- [Extract Audio](https://toolsugar.com/tools/audio-extractor)
- [Video to MP3](https://toolsugar.com/tools/video-to-mp3)
- [MOV to MP3](https://toolsugar.com/tools/mov-to-mp3)
- [Compress Audio](https://toolsugar.com/tools/compress-audio)