Free online tool to convert MP4 videos to MP3 audio files. Extract high-quality audio from any video format with customizable bitrate and sample rate settings.
What is MP4 to MP3 Conversion?
MP4 to MP3 conversion is the process of extracting audio tracks from video files and saving them as MP3 format, which is the most widely used audio format compatible with all devices and media players.
Common Uses
Create ringtones from music videos, extract audio from tutorials or lectures, save audio from live performances, or create audio versions of your favorite video content.
Benefits
MP3 files are much smaller than video files, saving storage space. They can be played on any device without needing video playback capability.
Supported Video Formats
Our MP4 to MP3 converter supports 24 different video formats using the powerful FFmpeg library:
| Format Category | Supported Formats |
|---|---|
| Common Container Formats | MP4, MKV, AVI, MOV, FLV, WebM |
| Streaming Formats | M2TS, MTS, TS, MPEG-TS |
| Open Formats | OGV, OGG, OGX, OGA |
| Professional Formats | MXF, M4V, 3GP, 3G2 |
| Windows Media Formats | WMV, ASF |
| Other Formats | F4V, ISMV, VOB, DivX |
Audio Quality Settings
Customize your output audio quality with adjustable sample rate and bitrate settings:
Sample Rate
Sample rate refers to the number of samples of audio carried per second, measured in Hz. Higher sample rates provide better audio quality but result in larger file sizes. For most purposes, 44.1kHz (CD quality) is sufficient.
Supported Sample Rates: 8000, 11025, 16000, 22050, 32000, 44100, 48000 Hz
Bitrate
Bitrate determines the amount of data processed per second in the audio file, measured in kbps. Higher bitrates mean better sound quality but larger file sizes. 192kbps is a good balance between quality and size for most users.
Supported Bitrates: 64, 96, 128, 192, 256, 320 kbps
Why Choose Our MP4 to MP3 Converter?
No Registration Required
Use our converter immediately without creating an account or providing any personal information.
Privacy Protection
Your files are processed entirely in your browser—they are never uploaded to our servers, ensuring complete privacy.
Completely Free
Our MP4 to MP3 converter is 100% free with no hidden charges or premium features locked behind paywalls.
Unlimited Conversions
No restrictions on file size or number of conversions. Process as many files as you need without limitations.
Fully Responsive Design
Our converter works perfectly on all devices—desktops, tablets, and smartphones—with fast conversion speeds and no server delays.
Your Video Stays on Your Device
Your video is converted on your own device and is never uploaded. The conversion engine is downloaded the first time you convert, so that first run needs an internet connection.
How to Convert MP4 to MP3
Converting your videos to MP3 is simple with our user-friendly tool:
Select your preferred bitrate and sample rate (optional)
Click the upload area or drag and drop your video file
Wait a few seconds for the conversion to complete
Download your MP3 file or play it directly in the browser
Frequently Asked Questions
- Is there a file size limit for conversion?
- No, there are no file size restrictions. You can convert videos of any size, though very large files may take longer to process depending on your device's capabilities.
- How long does the conversion process take?
- Conversion speed depends on your device's processing power and the size of the video file. Most typical videos (under 100MB) convert in less than a minute.
- Will the audio quality be good?
- Yes, our converter uses the industry-standard FFmpeg library with high-quality encoding presets. You can also customize the bitrate and sample rate to balance quality and file size according to your needs.
- Are my files safe and private?
- Absolutely. Your files never leave your device—all processing happens locally in your browser. We don't have access to your files at any point.