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MP4 to MP3 converter

MP4 to MP3 Converter: Free, Online and Without Uploading

Extract the audio from an MP4 video and save it as an MP3 at 128 to 320 kbps. Works on Windows, Mac, iPhone and Android, and the video stays on your device.

  • MP4 files only
  • Video is not uploaded
  • 128 to 320 kbps
  • Up to 150 MB

Start here

Convert your MP4 to MP3

The file stays in this browser.

  1. Choose your MP4 file
  2. Pick the MP3 quality
  3. Download your MP3

Drop your MP4 file here

MP4 files only, up to 150 MB. The file stays in this browser.

Audio quality

Duration is not available yet, so there is no size estimate.

.mp3

One file at a time, up to 150 MB. Quality choices are 128, 192, 256, and 320 kbps.

Audio conversion uses FFmpeg through the single-threaded @ffmpeg/core 0.12.10 build, licensed under GPL-2.0-or-later. FFmpeg. ffmpeg.wasm.

MP4 is the most common video format there is: Android phones, GoPros, Zoom, video editors and messaging apps all produce it. This free online MP4 to MP3 converter pulls the soundtrack out of an MP4 and gives you an MP3 you can play in the car, put on a phone or drop into a podcast editor. Unlike most online converters, it does not upload your video. For MOV, WEBM or MKV files, use the video to MP3 converter.

How it works

How do I convert MP4 to MP3?

Five audio format waveforms compared side by side
  1. Click Browse files and choose the MP4, or drag it onto the converter.
  2. Pick the Audio quality. 192 kbps is the default.
  3. Click Convert to MP3.
  4. Click Download MP3. A one-minute clip at 192 kbps comes out at about 1.44 MB.

How it works

How do I convert MP4 to MP3 on Windows 11, Mac, iPhone or Android?

The steps are the same everywhere because the converter runs in the browser. Only the way you pick the file and where the MP3 lands change.

DeviceBrowserWhere to find the MP4Where the MP3 is saved
Windows 10 or 11Edge, Chrome or FirefoxDrag from File ExplorerDownloads folder
MacSafari, Chrome or FirefoxDrag from FinderDownloads folder
iPhone or iPadSafariBrowse files > Photo Library or FilesFiles > Downloads
AndroidChromeBrowse files > gallery or FilesDownloads

Windows 11 plays MP4 files, but File Explorer has no "convert to MP3" command. A browser converter is the quickest route without installing software.

Formats

Will converting MP4 to MP3 reduce quality?

Very slightly. The audio in an MP4 is almost always AAC, a lossy format. Converting it to MP3 compresses it a second time. At 192 kbps or higher, the difference from the original soundtrack is very hard to hear. Choose 128 kbps for speech, 192 kbps for most videos and 256 or 320 kbps for music videos with a clean soundtrack.

Basics

What is inside an MP4 file?

MP4 (MPEG-4 Part 14) is a container. It stores video, audio, subtitles and metadata as separate streams in one file. The video is usually H.264 or HEVC. The audio is usually AAC, which file tools often label "mp4a", the code MP4 uses for AAC audio. That is why some people search for an "mp4a to MP3 converter": it is the same job.

An MP4 that contains only audio is normally saved as .m4a. If your file ends in .m4a, use the M4A to MP3 page.

How it works

How long can my MP4 be?

The limit is 150 MB per file. How many minutes that holds depends on the video's resolution and bitrate. An iPhone records 1080p at 30 fps at about 60 MB per minute in High Efficiency mode and about 130 MB in Most Compatible mode (H.264, often saved as MP4 when shared), according to the estimates in its Camera settings. That is one to two minutes. A compressed 720p MP4 from a messaging app holds far more. If your MP4 is bigger, trim it in your phone's gallery, the Windows Photos app or QuickTime Player, and convert the part you need.

Compare

What is the best MP4 to MP3 converter?

The best MP4 to MP3 converter for most people is one that works on the file you already have, without an upload or an install. Check for these four things:

  • No upload. Your video should not have to travel to a server you know nothing about.
  • A bitrate choice. You should be able to pick 128, 192, 256 or 320 kbps.
  • No installer or extension. A web page can convert an MP4 by itself.
  • One clean download. The file you receive should end in .mp3, nothing else.

For a deeper comparison of online, upload-based and desktop tools, read our guide to choosing the best MP3 converter.

Limits

Limits of the MP4 to MP3 page

This page accepts MP4 files only, one at a time, up to 150 MB. It does not download videos from YouTube or any link. If the MP4 has several audio tracks, the first one is converted. For other files, use the main MP3 converter.

More detail in our guides: Best MP4 to MP3 Converter: What Actually Matters and Convert to MP3 on a Mac: Music App, QuickTime or Your Browser.

FAQ

Frequently asked questions about MP4 to MP3

Is this MP4 to MP3 converter free?

Yes. It is free to use, with no sign-up and no limit on how many files you convert one after another.

Is it safe to convert MP4 to MP3 online?

It is safe here because your MP4 is never uploaded. The conversion runs in your browser with FFmpeg.

Can I convert MP4 to MP3 on my iPhone?

Yes. Open the page in Safari, tap Browse files, choose the video from your Photo Library and convert. The MP3 is saved in Files > Downloads.

What bitrate should I use for MP4 to MP3?

192 kbps for most videos, 128 kbps for speech and 320 kbps for music videos with a high-quality soundtrack.

Why is my MP4 over 150 MB?

1080p and 4K videos are large. Trim the video to the part you need and convert that shorter copy.

Can I convert a YouTube MP4 link?

No. The converter only accepts MP4 files that are already on your device, not links.

Get started

Convert your MP4 to MP3

Choose the MP4, select the quality and download the audio in seconds.

Choose an MP4

Tools

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