About the MP4 to MP3
MP4 is the standard video format of phones, cameras, YouTube downloads and screen recorders. Its soundtrack is usually AAC audio. MP3 is the most compatible audio format in the world: every phone, car, speaker, app and editor plays it.
FileStripe decodes your MP4 file with your browser's built-in decoder and encodes MP3 on your device using the LAME MP3 encoder. Your files are never uploaded, so it is quick even for long recordings.
About MP4 and MP3 files
New to these formats? These pages explain what each one is for and how to open it on Windows, Mac, iPhone and Android.
How to convert MP4 to MP3
- Add your MP4 files.
- Choose the MP3 quality (192 kbps is a great default), channels and volume.
- Convert and download the MP3 files.
Features
- No uploadConverted on your device.
- BatchConvert many files at once.
- Up to 320 kbpsChoose the bitrate.
- Volume boostMake quiet recordings louder.
Frequently asked questions
How do I convert MP4 to MP3?
Add your MP4 files above, choose the settings and click Convert. Each file is turned into MP3 in a few seconds and you can download it right away.
Is the video kept?
No. Only the audio track is saved as MP3; the video is discarded.
Is there a file size limit?
No fixed limit. Very long files (several hours) need a device with enough memory.
Is the MP4 to MP3 free?
Yes. The MP4 to MP3 is completely free with no sign-up, no watermarks, no daily limits and no premium tier.
Are my files uploaded to a server?
No. FileStripe processes your files locally in your web browser using JavaScript. Nothing is uploaded, so the MP4 to MP3 is safe for private photos and confidential documents and even works offline once the page has loaded.
Does it work on iPhone and Android?
Yes. The MP4 to MP3 works in Safari, Chrome, Firefox, Edge and Samsung Internet on phones, tablets and computers. On a phone you can pick files from your photo library or files app and share the result straight to another app.
Last updated · Processing happens locally in your browser.