Convert Audio Files Online.
Fast, Free & Private.
Convert MP3, WAV, M4A, FLAC, and more. Extract crystal-clear audio from video files with a simple, private browser converter. Zero file uploads.
Drop your audio or video files here to convert
MP3, WAV, M4A, FLAC, MP4, MOV, MKV and more • 100% Client-Side
How do I convert audio or extract sound from video files online without uploading them?
BrowserConvert executes WebAssembly-compiled FFmpeg directly inside your web browser sandbox. Drag and drop your audio or video files into the converter, select your output format (MP3, WAV, M4A, FLAC, OGG, OPUS), and click Convert. All processing takes place in your local device memory with 100% privacy and zero server uploads.
Popular Media Conversions
Dedicated converters with pre-configured settings for the most requested formats.
MP4 to MP3
Extract clean audio tracks from MP4 video clips directly in your browser.
WAV to MP3
Compress uncompressed master WAV recordings into portable high-bitrate MP3s.
M4A to MP3
Convert Apple Voice Memos and iTunes audio files to universally compatible MP3.
FLAC to MP3
Transform lossless studio FLAC albums into 320 kbps MP3 files for mobile players.
MOV to MP3
Rip audio from Apple QuickTime MOV recordings without sending video to any server.
MP3 to WAV
Decompress MP3 audio into uncompressed 16-bit PCM WAV for audio editing and DAWs.
Supported Audio & Video Codecs
Every format is processed by our client-side WebAssembly multimedia engine.
Supported Audio Outputs
Available target formats for all conversions
The universal audio format compatible with virtually every player and device.
Uncompressed raw PCM audio delivering studio-grade master fidelity.
Apple standard high-efficiency audio offering better fidelity than MP3 at matching bitrates.
Advanced Audio Coding standard used widely in broadcasting and streaming.
Free Lossless Audio Codec preserving 100% of audio data at roughly half raw file size.
Open-source patent-free container with high compression efficiency.
State-of-the-art codec designed for internet transmission with ultra-low latency.
Video Extraction Formats
Containers supported for direct audio extraction
Pure Audio Extraction
The video stream is bypassed entirely during processing, saving battery and producing maximum fidelity audio.
How BrowserConvert Works in 3 Simple Steps
Intuitive client-side processing without complex menus or waiting queues.
Upload Your Media
Drag and drop single or multiple audio/video files into the converter. Your files stay on your device.
Select Format & Settings
Choose your target format (MP3, WAV, FLAC, etc.) and optionally adjust bitrate, sample rate, or trimming.
Download the Result
Click Convert to run FFmpeg locally. Download individual audio tracks or grab all converted files in one ZIP.
Why Choose BrowserConvert?
Engineered for genuine privacy, audio fidelity, and modern browser standards.
100% Client-Side Privacy
Your files never touch our servers. WebAssembly executes the entire conversion locally inside your own browser window.
Fast & Registration-Free
No account creation, no email verification, and no wait times. Drop your files and download the converted audio immediately.
Custom Bitrate & Audio Controls
Fine-tune output parameters from 64 kbps to 320 kbps, adjust sample rates, select mono/stereo, or trim start and end times.
Batch Conversion & ZIP Download
Process multiple tracks simultaneously. When finished, download all converted tracks packaged into a single ZIP archive.
Frequently Asked Questions
Everything you need to know about our browser audio conversion architecture.
How does BrowserConvert process files without uploading them?
BrowserConvert runs WebAssembly (Wasm) compiled FFmpeg directly inside your web browser. When you select a file, your browser's CPU processes and re-encodes the audio data in memory. No file data is ever transmitted across the internet to our servers.
Which video formats can I extract audio from?
You can upload common video containers including MP4, MOV, MKV, WEBM, AVI, WMV, FLV, 3GP, and TS. The engine extracts the underlying audio stream and encodes it into your chosen output format such as MP3 or WAV.
What audio bitrate should I choose?
For general listening, 192 kbps is the recommended sweet spot between file size and audio fidelity. For spoken word and voice memos, 96-128 kbps is sufficient. For high-fidelity music playback on quality speakers, select 256 or 320 kbps.
Will converting MP3 to WAV restore lost audio quality?
No. MP3 is a lossy format, meaning data was permanently discarded during its initial encoding. Converting MP3 to WAV creates an uncompressed PCM stream suitable for editing software, but cannot restore the frequencies lost during the original MP3 compression.
Is there a file size limit?
Because processing happens in your browser's memory, we recommend files under 1 GB for smooth performance. Very large video files may be constrained by your device's available RAM.
Can I use BrowserConvert on my smartphone?
Yes. BrowserConvert is fully responsive and functions on modern mobile browsers including Safari on iOS and Chrome on Android with WebAssembly support.