Morfile
Nothing is uploaded: conversion happens on your device
Convert MP4 to MP3
No upload: your file is converted on your device. Included in Morfile Pro.
Converting MP4 to MP3 is part of Morfile Pro
24-hour pass for €3.99 or lifetime access for €24.99, no automatic renewal. Conversion stays on your device, just like the free plan.
How to convert a MP4 file to MP3
- 1 Open the Morfile app and drop your MP4 files.
- 2 Choose MP3 as the output format, then start the conversion.
- 3 Download your MP3 file, or a ZIP if you converted several.
Why convert a MP4 file to MP3?
An MP4 video is heavy when you only want the sound, or too long for an animation.
MP3 plays on every device, from old music players to car stereos.
What about quality?
Morfile uses your device’s encoders, accelerated by the graphics chip when possible. Adjust quality, resolution or duration in the app.
Frequently asked questions
Is it free to convert a MP4 file to MP3?
This conversion is part of Morfile Pro: 24-hour pass for €3.99 or lifetime access for €24.99, no automatic renewal. JPG, PNG and WebP stay free.
Is my MP4 file uploaded to a server?
No. Conversion happens in your browser, on your device. Turn off your Wi-Fi to check: it still works.
Does it work on iPhone and Android?
Yes, right in the browser. Install the app in one click to convert even offline.
Can I convert several MP4 files at once?
Yes, with Morfile Pro: drop as many files as you like, you get a ZIP.