Instant Conversion
Runs in your browser with WebAssembly. No upload wait. No server queue.
100% Private
Your audio files never leave your device. Zero data collection. Zero tracking.
Works Everywhere
Chrome, Firefox, Safari, Edge. Mac, Windows, Linux, mobile. No install needed.
Audio Conversion Tools
18 converters. Every major audio format. All free.
How It Works
Upload
Drop your audio file or click to browse. We accept MP3, WAV, FLAC, OGG, M4A, AAC, WMA, and AIFF.
Convert
Hit convert. The magic happens right in your browser using WebAssembly. Takes seconds, not minutes.
Download
Your converted file is ready. Download it instantly. No email required. No signup wall.
The Free Audio Converter That Respects Your Privacy
Most audio converters upload your files to a server. They process them remotely. Your personal recordings, music, and audio pass through someone else's infrastructure.
AudioUtils is different. Every conversion runs locally in your browser using FFmpeg compiled to WebAssembly. Your files never leave your device. There's nothing to upload. Nothing to download from our servers. The processing happens on your machine.
We support every major audio format: MP3, WAV, FLAC, OGG Vorbis, M4A, AAC, WMA, and AIFF. Convert between any combination. Whether you need to compress a WAV file for sharing, convert M4A from your iPhone to universal MP3, or wrap your FLAC collection in a different lossless container — AudioUtils handles it.
Free users get 5 conversions per day with a 20MB file size limit. That covers most needs. If you need more, Pro removes all limits for a flat monthly fee.
Learn About Audio
Guides, comparisons, and everything you need to work with audio files.