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Opus is a modern, open audio codec optimized for internet streaming and real-time applications like VoIP, video conferencing, and gaming. It offers excellent quality at low bitrates and adapts dynamically to different audio types, including speech and music.
M4A is an audio file format based on the MPEG-4 standard. It typically uses AAC or ALAC codecs for high-quality sound. M4A is widely supported by Apple devices and offers better compression and quality than MP3 at similar bitrates.
Convert your .opus files to .m4a right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your OPUS files into M4A in just a couple of clicks. No registration, no limits — and it’s 100% free.