MP4 to MP3

Convert MP4 videos to MP3 and keep only the audio.

or drag and drop here · Ctrl+V to paste

Processed on your device. Your files aren't uploaded to any server.

How to use: MP4 to MP3

Select one or more MP4 files.
Choose a quality, if you like.
Click Convert to MP3 to download.

About this tool

What is MP4? MPEG-4 Part 14 is the most widely compatible video format, used by phones, YouTube, Instagram, and WhatsApp. It's ideal for sharing videos anywhere. It plays on nearly all devices and social media platforms.

Why convert to MP3? MP3 is one of the most widely compatible audio formats, and its compression can reduce a music file to about 1/10 of its original size. It's a great choice for music, podcasts, and audio you want to play anywhere—on phones, cars, speakers, and software.

Frequently asked questions

What's the difference between MP4 and MP3?

Both use lossy compression. For compatibility: MP4 plays on nearly all devices and social media platforms; MP3 plays on all phones, cars, speakers, and software.

Does it work in all browsers?

It works in current versions of Chrome, Edge, Firefox, and Safari that support WebCodecs. Processing uses your device’s video acceleration, so it’s usually faster than uploading the file to a website.

Is there a file size or video length limit?

We don’t set a limit. Very large files (several GB) depend on your device’s memory; on phones, we recommend videos that are a few minutes long or less.

Are my files uploaded to a server?

No. This tool runs entirely in your browser: your file is read and processed on your device, and not a single byte is sent over the internet. You can even disconnect from the internet after the page loads.

Is it really free? Is there a daily limit?

It's free with no daily limits. Processing happens on your device, so there's no per-use cost and no need to limit you.

Does it work on phones?

Yes. The site works in any modern browser on Android, iPhone, Windows, Mac, and Linux—no installation needed.

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