Convert audio files between formats entirely in your browser. No upload required.
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Drop an audio file here
or click to browse — MP3, WAV, OGG, M4A, FLAC, AAC
⚡Audio engine loads ~10s on first visit — cached after that
Convert audio files between MP3, WAV, OGG, M4A, FLAC, and AAC entirely in your browser using FFmpeg compiled to WebAssembly. No file is ever uploaded to a server. The audio engine (~30MB) is downloaded on first use and cached by your browser for subsequent visits.
Frequently Asked Questions
MP3, WAV, OGG, M4A, FLAC, and AAC. The underlying WebAssembly engine supports virtually all common audio formats.
On first use, a ~30MB WebAssembly audio engine is downloaded from a CDN and cached by your browser. Subsequent conversions start immediately.
No server-side limit since files never leave your browser. Very large files may be slow depending on your device.
Yes, completely free. No subscription, no credit card, no hidden fees.
No. There is no login, no sign-up, and no account required. Just open the page and use it.
Yes. Everything runs entirely in your browser. Your audio files are never sent to any server.
After the audio engine has been downloaded once, conversions work fully offline.