MP4 to MP3
MP4 to MP3 is a free online tool that converts MP4 files to MP3 directly in your browser — no sign-up, no watermark, and no upload.
Free · unlimited · processed privately in your browser
or drag and drop a file here
Supported: MP4
Your files stay private — 100% in your browser
We never upload your files, photos, or videos to any server. Everything is processed directly in your browser, so your data never leaves your device. That means zero privacy worries — no one else can ever see or store what you convert.
- No uploads
- Processed on your device
- No sign-up needed
About MP4 to MP3
MP4 to MP3 converts your MP4 files to MP3 for free, right in your browser. MP4 is the most widely compatible video container, so converting MP4 to MP3 gives you a small, universal file that plays on virtually any phone, browser, car stereo, or media player. There is no sign-up, no watermark, and no limit on how many files you can convert. The whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.
After you upload
MP4 to MP3 needs no settings — the conversion starts as soon as you run it and finishes in your browser, so nothing is uploaded.
How to use MP4 to MP3
- 1Click Choose Files and select the MP4 file you want to convert.
- 2The tool reads your MP4 file and prepares it for conversion.
- 3Press Run to convert it to MP3 directly in your browser — nothing is uploaded.
- 4Download your new MP3 file instantly.
Frequently asked questions
What is MP4?
The most widely compatible video container, playable on virtually every device and platform.
What is MP3?
The universal lossy audio format — small files that play on every device and app.
Why convert MP4 to MP3?
MP4 is the most widely compatible video container, so converting MP4 to MP3 gives you a small, universal file that plays on virtually any phone, browser, car stereo, or media player.
Will converting MP4 to MP3 reduce the quality?
Both MP4 and MP3 are lossy. Converting re-encodes the file, which can lose a small amount of quality; converting once at a good bitrate keeps the result very close to the original.
Is MP4 to MP3 free?
Yes — MP4 to MP3 is free to use as often as you like, with no account, no caps, and no watermark on the output.
Do I need to install anything?
Nothing to install. MP4 to MP3 works inside your web browser on desktop and mobile — no app, codecs, or plugins needed.
Are my files uploaded to a server?
No. Your media files are processed on your own device and never sent to a server, so they stay private.
How to convert mp4 to mp3?
Use MP4 to MP3 above: upload your file, run it, and download the result. It is free with no limits or sign-up, and the whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.
How to extract audio from a video?
Use MP4 to MP3 above: upload your file, run it, and download the result. It is free with no limits or sign-up, and the whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.
How to get mp3 from mp4?
Use MP4 to MP3 above: upload your file, run it, and download the result. It is free with no limits or sign-up, and the whole process happens on your own device using your browser, so your media is never uploaded and nobody else can access it.