SnapMedia

Free online converter

MP4 to MP3 Converter

Pull the soundtrack out of an MP4 and save it as an MP3 that plays on anything. Drop the file below — it is converted in your browser and never uploaded.

No upload

Converted on your device

No sign-up

Free, no daily limit

No watermark

Your file, untouched

Batch

Several files at once

How to convert MP4 to MP3

  1. Add your MP4 files. Drag them onto the box above or click to choose them. You can add several at once.
  2. Check the target is MP3. It is already selected. Adjust the quality under Options if you want.
  3. Click Convert. The conversion runs in your browser — the file is never uploaded to a server.
  4. Download the MP3. When it finishes, click Download on each file.

When you need this

Keeping the audio of a recorded talk, a class, a concert clip or a video you filmed on your phone, without the weight of the video.

MP4 vs MP3

MP4

The universal video format. H.264 video with AAC audio in an MP4 plays on every phone, browser, TV and social network.

Best for: sharing, uploading to YouTube, Instagram or TikTok, and playing anywhere.

MP3

The most widely supported audio format. Lossy compression keeps files small — about 1.4 MB per minute at 192 kbps — while sounding transparent to most listeners.

Best for: music libraries, podcasts, phones, car stereos, anything that just needs to play.

Will I lose quality?

Every time lossy audio is compressed again a little more is lost, so it is best not to go below 192 kbps (320 for music). When the audio inside the MP4 is already in the target codec — AAC inside an MP4 going to M4A, for instance — it is copied without recompressing and nothing is lost.

Have a link instead of a file?

Paste it into the YouTube to MP3 converter and skip the conversion.

Related conversions

MP4 to WAVMOV to MP3WEBM to MP3WAV to MP3M4A to MP3FLAC to MP3All conversions →

Frequently Asked Questions

How do I convert MP4 to MP3?
Drag the MP4 file onto the box above, check the target is MP3 and click Convert. As soon as it finishes a Download button appears. Nothing to install, no account needed.
Is it free to convert MP4 to MP3?
Yes, completely: no sign-up, no daily limit and no watermark. Your own browser does the conversion, so it costs us nothing and there is no reason to charge for it.
Are my files uploaded to a server?
No. The converter runs inside your browser: the file is read and converted on your device and never leaves it. That is why it is safe for private or work recordings.
Will I lose quality?
Every time lossy audio is compressed again a little more is lost, so it is best not to go below 192 kbps (320 for music). When the audio inside the MP4 is already in the target codec — AAC inside an MP4 going to M4A, for instance — it is copied without recompressing and nothing is lost.
Is there a file size limit?
Up to 1 GB per file. The limit is not a business one but the browser’s: all the work happens in its memory, and above that size some browsers close the tab. On a phone, stay well below it.
Can I convert several files at once?
Yes. Add as many MP4 files as you like and they are converted one after another with a single click. Each one can go to a different format.