MP4 to MP3 Converter
Extract the audio from any video and save it as a high-quality MP3. Convert MP4, MOV, WEBM and MKV videos to MP3 in seconds, without uploading them anywhere.
Select a file to start.
Your files never leave your computer or phone: conversion happens locally in your browser. For best results use files under 500 MB on desktop (smaller on phones).
Convert MP4 to MP3 online for free
Want just the sound from a video? Voice Convert’s MP4 to MP3 converter extracts the audio track from your video and saves it as an MP3 you can play anywhere: on your phone, in your car, in a music app or as a podcast. Unlike most online converters, your video is not uploaded to a server. The conversion happens right inside your browser, which makes it faster and completely private.
It supports MP4, MOV, M4V, WEBM and many MKV files, and lets you choose MP3 quality from 128 kbps up to 320 kbps, or save as lossless WAV.
How to convert a video to MP3
- Choose your video or drag and drop it into the box.
- Select the output quality. 192 kbps is a great balance of quality and size; choose 320 kbps for music.
- Press Convert and wait a few seconds.
- Preview and download your MP3 file.
Why use this video to audio converter?
- No upload, no waiting: large videos convert without slow upload times.
- Private: personal videos never leave your device.
- High quality: up to 320 kbps MP3 or lossless WAV.
- Free and unlimited: no sign-up, no watermark, no daily limit.
- Works everywhere: Windows, Mac, Linux, Android and iPhone.
Please only convert videos that you own or have permission to use. Need to convert an audio file instead, such as M4A or OGG? Try the audio converter. Want to add effects to the extracted voice? Use the voice changer.
Frequently asked questions
Is the MP4 to MP3 converter free?
Yes, it is 100% free with no limits on the number of files.
Is my video uploaded to your server?
No. The audio is extracted inside your browser, so your video stays on your device.
What is the maximum file size?
There is no fixed limit, but it depends on your device’s memory. Files up to about 500 MB usually work well on computers; phones handle smaller files best.
Can I convert MP4 to MP3 on iPhone or Android?
Yes. Open this page in your mobile browser, choose the video from your gallery or files, and press Convert.