Convert OPUS to MP3

Private by design: the conversion runs on your device. Nothing is uploaded.

  1. Choose the target format
  2. Drop your file (or click to browse)
  3. Download the converted file
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Output format: mp3

Opus files turn up as voice notes exported from a chat app, as Telegram and WhatsApp audio, and as the sound pulled out of a WebM video, and then half the world's software shrugs at the extension. Converting to MP3 makes the recording ordinary enough to email, attach to a ticket or hand to a transcription tool. The Opus decoder is part of the ffmpeg build already running in this tab.

Frequently asked questions

Why does my messenger export audio as .opus?
Opus is unusually good at speech at very low bitrates, which is why chat apps picked it for voice notes. That efficiency is also why the MP3 you get back is normally the bigger of the two files.
My file is named .ogg but the audio inside is Opus, will that work?
That combination is expected here. Both extensions are accepted on this page, and the codec is detected from the contents of the file rather than from its name.
Is the recording still clear afterwards?
Speech stays perfectly understandable. The MP3 is encoded well above the bitrate a voice note was captured at, so this step is not what limits how it sounds.