Free MP4 to MP3 Converter
A truly free MP4 to MP3 converter — no hidden fees, no daily limits. Upload your MP4 files and download MP3 audio in seconds.
Click to upload or drag and drop
MP4 files (multiple supported)
About Free MP4 to MP3 Conversion
Our free MP4 to MP3 converter lets you extract audio tracks from video files without paying a cent. All processing happens on your device using WebAssembly technology, so your files stay private and secure.
How to Convert to MP3
Convert your audio or video files in 3 simple steps
Upload Your File
Drag and drop or click to select any supported audio or video file. You can upload multiple files at once.
Automatic Conversion
Our browser-based FFmpeg engine automatically converts your file to MP3 locally on your device. Nothing is uploaded to our servers.
Download MP3
Download your converted MP3 instantly. No sign-up, no watermarks, and your files never leave your browser.
Why Choose Our Converter?
100% Private
Files are converted locally in your browser. Nothing is uploaded to our servers.
Lightning Fast
Powered by WebAssembly technology for native-like performance.
Universal Support
Supports over 30+ audio formats including WAV, OGG, FLAC.
Free Forever
No daily limits, no file size restrictions, and no registration required.
Frequently Asked Questions
Is To MP3 Converter free to use?
Yes, To MP3 Converter is completely free to use. There are no hidden fees, subscriptions, or limits on the number of files you can convert.
Is it safe to convert my files here?
Absolutely. We use advanced WebAssembly technology to convert your files locally within your browser. Your files are never uploaded to our servers, ensuring 100% privacy and security.
What formats do you support?
We support a wide range of audio and video formats including MP4, WAV, FLAC, M4A, OGG, Opus, WebM, AVI, MKV, and many more. All can be converted to high-quality MP3 format.
Do I need to install any software?
No software installation is required. Our converter works directly in your web browser (Chrome, Firefox, Edge, Safari) on both desktop and mobile devices.
How long does the conversion take?
Conversion speed depends on your file size and device performance. Since the conversion happens locally, it is usually very fast, often taking just a few seconds for average-sized files.
Can I use this on my mobile phone?
Yes, our website is fully responsive and works on modern smartphones and tablets, allowing you to convert files on the go.