MP4 to MP3 Converter
Extract audio from MP4 videos in seconds. Upload your file, pick a bitrate, and download the MP3 — no software install needed.
Convert to MP3
Drop MP4 here or click to browse
MP4 videos, up to 50MB total
High quality, larger file size
Need the transcript too?
Drop your audio into ScriberGPT for clean text with timestamps and speaker labels.
How to convert MP4 to MP3
1. Upload your MP4
Drag and drop your MP4 video, or click to pick a file from your device. You can add more than one.
2. Choose the quality
Pick the MP3 quality you want, up to 320kbps for clear, crisp audio.
3. Convert and download
Click convert, wait a few seconds, then download your MP3. Your files stay on your device the whole time.
Why use this MP4 to MP3 converter
Bitrate control
Pick from small voice files up to detailed 320kbps so the MP3 fits your use case — voice, podcast, or music.
Batch convert
Drop multiple MP4s and convert them all at once with the same quality settings.
Stays on your device
FFmpeg runs in your browser. No upload, no server processing, no waiting for queues.
Professional MP4 to MP3 Conversion: Complete Guide for Content Creators
Our MP4 to MP3 converter uses FFmpeg WebAssembly technology to extract audio tracks from video files with precision and speed. Whether you're a content creator converting video interviews to podcast episodes, a musician extracting audio from video recordings for music production, or someone needing to separate audio tracks from presentation videos, the tool provides clean browser-based conversion with complete privacy protection through client-side processing.
High-Quality MP3 Audio Extraction: Professional Video to Audio Conversion
Our MP4 to MP3 converter extracts audio tracks and lets you choose bitrates from 64kbps for voice recordings up to 320kbps for higher-quality output. Whether you're converting music videos, podcast recordings, interviews, or presentation audio, the bitrate setting controls the tradeoff between audio detail and file size.
Customizable Bitrate Settings: Precision Control for Every Content Type
Our converter offers multiple bitrate options optimized for different content types: Low quality (64kbps) for voice recordings and small file requirements, Medium quality (128kbps) for balanced audio quality and file size, and High quality (320kbps) for better detail in music, podcasts, and interviews. Higher bitrates create larger MP3 files, while lower bitrates create smaller files for simple speech audio.
Batch Processing Workflow: Efficient Video Library Management
Our MP4 to MP3 converter supports batch processing of multiple video files simultaneously, enabling content creators, podcasters, and media teams to convert entire video libraries efficiently. Whether you're processing multiple podcast episodes, converting a series of video interviews, or extracting audio from a collection of presentation recordings, batch processing saves significant time while maintaining consistent quality settings across all files. The tool automatically handles different video resolutions, codecs, and audio configurations, ensuring reliable results regardless of the source video specifications.
MP4 Audio Extraction: Handle Common Video Audio Configurations
The converter extracts the audio stream from standard MP4 files and converts it to MP3. It is best suited for common videos from phones, cameras, screen recorders, editing apps, and presentation tools. Password-protected or DRM-restricted files are not supported.
Client-Side Processing: Complete Privacy and Security Protection
All MP4 to MP3 conversion happens entirely within your web browser using WebAssembly technology, ensuring complete privacy and security for sensitive content. Your video files never leave your device or get uploaded to our servers, making this tool ideal for processing confidential recordings, copyrighted material, personal videos, or any content where privacy is paramount. This client-side processing approach eliminates data transmission risks while providing audio extraction capabilities directly in your browser.
Audio Quality: High-Quality MP3 Output
MP3 is a compressed audio format, so output quality depends on the source video and the bitrate you choose. A 320kbps MP3 keeps more detail than lower bitrate options, while 64kbps or 128kbps can be useful for smaller voice-focused files. Choose the setting that matches your use case instead of assuming one bitrate is best for every file.
Result Details: Check the Converted File Before Download
After conversion, the results section shows the converted file name, selected quality, and file size before download. If you need a different balance between size and quality, choose another bitrate and run the conversion again.
Cross-Platform Compatibility: Universal Access for All Devices and Browsers
Our MP4 to MP3 converter works seamlessly across all modern devices and browsers, including Windows PCs, Mac computers, Linux systems, Android smartphones, iPhones, and tablets. The WebAssembly-based processing engine ensures consistent performance and quality regardless of your operating system or device type. Whether you're using Chrome, Firefox, Safari, Edge, or mobile browsers, you can convert supported MP4 files without installing desktop software. This universal accessibility makes the tool perfect for content creators working across different platforms, remote teams collaborating on audio projects, or users who need consistent results regardless of their device or location.
Frequently Asked Questions
How do I convert MP4 to MP3?
Upload your MP4 video, choose the MP3 quality setting, then click Convert to MP3. When the conversion finishes, download the MP3 file from the results section.
What MP3 quality should I choose?
Use 64kbps for small voice files, 128kbps for balanced speech audio, and 320kbps when you want higher-quality MP3 output for podcasts, interviews, or music.
Is MP3 lossless?
No. MP3 is a compressed audio format. Higher bitrate settings keep more detail, but MP3 output is still designed for smaller file size and broad compatibility.
Can I convert multiple MP4 files at once?
Yes. You can batch convert multiple MP4 files with the same quality setting, as long as the total upload stays within the free limit.
What is the file size limit?
The free limit is 50MB total per MP4 conversion request. For larger videos, compress or split the source file first.
Are my videos uploaded?
No. MP4 to MP3 conversion runs in your browser with FFmpeg WebAssembly, so your file stays on your device.