Skip to main content
    Convertly Converter

    Convert OPUS to MP3 online

    Convert your OPUS files to MP3 for free, online, no signup or installation.

    Accepted source formats

    OPUS

    Available output formats

    MP3

    How it works

    1

    Upload

    Drag and drop or select your OPUS file from your device

    2

    Convert

    Click "Convert" and wait a few seconds

    3

    Download

    Get your converted MP3 file instantly

    Common mistakes

    • Using a source file of poor quality.
    • Publishing without checking the final result.
    • Confusing file size, dimensions and quality.
    • Overwriting the original file without keeping a copy.

    Pro tips

    • Always keep an original version.
    • Test several settings before downloading.
    • Use WebP for the web when possible.
    • Choose descriptive file names for SEO.

    Privacy guaranteed

    Your files are processed locally in your browser and are never uploaded to our servers.

    OPUS to MP3: convert a WhatsApp voice note or a recording

    WhatsApp, Signal, Telegram, and many messaging apps record voice notes as OPUS: very compact, but poorly supported outside those apps. Converting to MP3 lets you email the note, drop it into an audio editor, or play it on any device.

    Voice quality preserved, slightly larger file

    At equivalent quality MP3 is slightly heavier than OPUS on voice. A 200 KB WhatsApp voice note becomes a 400–800 KB MP3 at 96 kbps — still light and workable everywhere.

    Ideal for archiving and transcription

    Converting to MP3 helps long-term archival (MP3 will still be readable in 20 years; OPUS is less guaranteed on old systems) and enables direct import into transcription software (Otter, Trint) or AI assistants that don’t always accept OPUS.

    Discover all our tools

    Convert, compress, merge and edit your files in a few clicks.

    See all tools

    Complementary tools

    PDF → PNGJPG → PDFMP4 → PDFZIP → PDF

    Guides and tutorials

    Learn how to use our tools with our detailed guides.

    How to convert a audio file to audio? online

    Convert your audio files to audio for free, online, no signup or installation. Change file extension fast, in batch, directly in your browser.

    How to convert a audio file to audio? online

    Convert your audio files to audio for free, online, no signup or installation. Change file extension fast, in batch, directly in your browser.

    How to convert a audio file to audio? online

    Convert your audio files to audio for free, online, no signup or installation. Change file extension fast, in batch, directly in your browser.

    Frequently asked questions

    Yes — at equivalent bitrate the voice stays intelligible and faithful to the original.

    Slightly, because MP3 is a bit less efficient than OPUS on voice. The difference stays marginal in practice.

    Yes — multi-file import is supported and each OPUS produces a matching MP3.

    No — the entire conversion runs in your browser: your voice notes stay private.
    Convert OPUS to MP3 for free | Convertly Converter