Free online OPUS-to-AU converter — upload a OPUS file and download a AU. Fast, private, no signup.
Drop your OPUS file into the converter above — we auto-detect the real format from its bytes, convert it, and give you a AU to download. No software to install.
Yes. Convert OPUS to AU for free right in your browser, with no account needed to get started.
Your file is transferred over an encrypted connection and anonymous uploads are temporary. You can also view and strip metadata (location, device, author) before you download.
Modern low-latency lossy audio codec. Sun/NeXT AU — a simple, long-lived PCM audio container.
Convert OPUS to: MP3 · WAV · FLAC · M4A · AAC · AC3 · AIFF · CAF · DTS · M4B
Convert to AU from: AAC · AC3 · AIFF · AMR · APE · CAF · DFF · DSF · DTS · FLAC