OPUS to MP3 Converter
Convert Opus voice notes to MP3. Works on WhatsApp voice messages. No uploads.
Drop files here
or click to browse · paste from clipboard
Accepts .OPUS, .OGG · Up to 1,000 files
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Choose settings
Adjust quality, format, and other options to match your needs.
Click Convert
Everything runs in your browser via WebAssembly. OPUS to MP3 Converter happens locally — no server involved.
Download
Download files individually or grab all at once as a ZIP.
Frequently asked questions
Opus is a modern, open-source audio codec developed by the IETF. It's designed for internet audio — voice calls, video conferencing, and streaming. It's used by WhatsApp for voice messages, Discord for voice channels, and WebRTC-based apps like Google Meet and Zoom. Opus files typically use the .opus extension or are stored inside an OGG container (.ogg).
Yes. Modern WhatsApp (Android and iOS) saves voice messages as Opus audio inside an OGG container — the files often have a .opus or .ogg extension depending on the platform and WhatsApp version. This tool handles both. If you exported voice notes from WhatsApp and they won't play on your computer, drop them here to convert to MP3.
OGG is a container format — like a ZIP file that holds audio data. Opus is a codec — the algorithm that compresses and encodes the audio. An OGG file can contain Vorbis audio, Opus audio, FLAC audio, or others. When someone says "OGG file," they usually mean OGG Vorbis. WhatsApp voice notes are OGG Opus — the OGG container with Opus audio inside. This tool handles both.
The Opus codec is not natively supported by Windows Media Player, older versions of QuickTime, or the iPhone's built-in Files app. Modern browsers (Chrome, Firefox, Edge) can play .opus files, but standalone media players often cannot. Converting to MP3 makes the file play on every device and player without any additional software.
Yes. Export your voice notes from WhatsApp (via WhatsApp Web or the "Export Chat" feature), then drop all the files into this tool at once. ConvertYard processes them one at a time in your browser and packages all the MP3s into a single ZIP for download.
Never. Conversion runs entirely in your browser using ffmpeg.wasm — a full media processing engine compiled to WebAssembly. Your files never leave your device. ConvertYard's servers only deliver the tool code — they never see your files.