Convert Opus to iPhone Audio — Free Online Converter

The iPhone Audio preset optimizes Opus files for Apple's iPhone ecosystem. While iPhones can decode Opus within Safari and certain WebKit-based apps, the native Music app, Files app, Voice Memos, and most third-party audio players do not recognize .opus files. The iPhone Audio preset produces an M4A file with AAC-LC at 256 kbps — the same format and bitrate that Apple uses for iTunes Store music purchases — ensuring flawless playback, sharing, and system integration on every iPhone model.

Opus is the voice codec powering Discord, WhatsApp calls, and WebRTC. When you save voice messages from these platforms, the resulting .opus files sit unusable in your iPhone's file system. This preset converts them into the format iPhones handle best, with proper metadata support for the Music app, Siri integration, CarPlay playback, and Apple Watch streaming.

iPhones are the most common scenario for Opus-to-native conversion. Users regularly download Opus voice messages from Telegram, export Discord recordings, or receive WebRTC audio files that their iPhone refuses to play. The .opus extension is not registered in iOS's UTType system, meaning the Files app shows no playback controls and the Share sheet offers limited options.

Converting to M4A/AAC unlocks the full iPhone audio experience: inline playback in Messages and Mail, AirPlay to HomePod and Apple TV, CarPlay integration, Apple Watch sync, Siri voice commands ("Hey Siri, play my voice recording"), Lock Screen controls, and Control Center audio widgets. The M4A format also supports chapter markers, artwork, and lyrics metadata that the Music app displays beautifully.