Convert MP4 to MP3
Extract the soundtrack from an MP4 video as an MP3 in your browser. Choose an audio bitrate, convert without uploading the video, and get a compact file for music players, podcasts, transcription, or sharing.
Files are converted on your device and never uploaded.
- Price
- Free
- Uploads
- None, it runs on your device
- Sign-up
- Not needed
- Batch
- Unlimited files
- Output
- MP3, bitrate you choose
- Install
- Nothing to install
How it works
How to convert MP4 to MP3
Add your MP4 files
Drop MP4 files onto the converter, click to choose them, or paste from the clipboard. Add as many as you like.
Check the settings
MP3 is already selected. Pick a bitrate, or keep the default.
Download your MP3 audio files
Each file gets its own download button as soon as it's ready. Download all saves everything in one ZIP file.
The formats
MP4 and MP3 at a glance
What is an MP4 file?
MP4 is the most widely supported video format. It usually holds H.264 video with AAC audio, a combination that plays on practically every phone, computer, TV, and website. It balances quality and file size well, which is why most cameras, phones, and editors export to it. It opens in everything: Windows Media Player and Films & TV, QuickTime and Photos on Mac, iPhone, Android, smart TVs, VLC, and every major website and video editor.
What is an MP3 file?
MP3 is the most widely supported audio format. Its lossy compression makes files about a tenth the size of CD audio, and at 192 kbps or more most people can't hear the difference. Every device that plays music plays MP3. It opens in everything: phones, computers, car stereos, smart speakers, browsers, and every music player and audio editor.
Good to know
What changes when you convert MP4 to MP3
- Only the soundtrack is saved; the picture is dropped.
- The audio is saved as MP3 at 192 kbps (you can pick 128 to 320 kbps).
- If the video's audio is already MP3, it's copied without re-encoding, so there's no quality loss. Picking a bitrate re-encodes it at that bitrate instead.
- Copy-protected (DRM) files can't be converted.
- Very long videos can run out of memory, especially on phones.
FAQ
Questions, answered
Does MP4 to MP3 keep the video?
No. MP3 stores audio only, so the picture is removed. The converter uses the video's main audio track and encodes it at the bitrate you choose.
Is this MP4 to MP3 converter free?
Yes. It's completely free, with no sign-up, no watermark, and no limit on how many files you convert. It costs Ethical Tube nothing to run, because the conversion happens on your own device rather than on a server.
Are my files uploaded anywhere?
No. The conversion runs inside your browser with Mediabunny and your browser's WebCodecs video encoders, so your files never leave your device. Once the page has loaded, it even works offline.
Does converting MP4 to MP3 lose quality?
MP3 is a lossy format, so the audio is compressed. At the default bitrate most people can't hear a difference. Choose 256 or 320 kbps for music you care about.
How long does it take?
When the video can be copied without re-encoding, a few seconds. Otherwise it depends on the video's length and resolution and on your device. With a hardware encoder, a 10-minute 1080p video usually takes a few minutes on a laptop.
Can I convert several MP4 files at once?
Yes. Add as many as you like. They're converted one after another, and you can download each MP3 file as soon as it's ready or all of them in one ZIP file.
Does it work on iPhone, Android, Mac, and Windows?
Yes. It works in current versions of Chrome, Edge, Safari, and Firefox. Phones handle short clips well, and long or 4K videos convert best on a computer.
What can open an MP3 file?
Everything: phones, computers, car stereos, smart speakers, browsers, and every music player and audio editor.
Is there a file size limit?
There's no upload limit because nothing is uploaded. The practical limit is your device's memory: everyday files are fine, and a computer can usually handle videos up to about 2 GB.
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