Why convert OPUS to MP3?

OPUS is the codec for WhatsApp and Telegram audios — many older players and editors don't open them; in MP3 it works everywhere.

What if I need the text from this audio?

After converting, you can transcribe the file with AI on VoxScriber: 30 free minutes per month, with automatic punctuation and speaker identification. Ideal for WhatsApp audios, meetings, and interviews.

Is the Convert OPUS to MP3 Online Free really free?

Yes, free and unlimited. Processing happens in YOUR browser (WebAssembly), so we have no server cost — and you don't need to create an account.

Is my file sent to any server?

No. All processing is local (FFmpeg compiled to WebAssembly running on the page). The file never leaves your device — it even works offline after the page loads.

Is there a size or quantity limit?

The limit is 300 MB per file (browser memory). There is no limit on the number of uses. For larger files, VoxScriber processes on the server with uploads up to 5 GB.

Does it work on mobile?

Yes — any modern browser (Chrome, Safari, Firefox, Edge) on desktop or mobile. On older phones, large files may take longer.

OPUS → MP3 · Free · No Upload · No Signup

Convert OPUS to MP3 Online Free — No Installation

Convert OPUS to MP3 directly in the browser, in seconds. Free, unlimited and private: your file never leaves your device.

Drop your file here or click to select

Processed in your browser — up to 300 MB. Nothing is uploaded.

100% local processing: your file never leaves your device.

Formatos suportados: .opus files up to 300 MB — processed locally

Resultado em segundos

100% em português do Brasil

Privacidade garantida

Sem instalação

Como funciona

Upload the OPUS file

Drag the .opus file to the area above or click to select. Accepts files up to 300 MB — all processed locally.

Conversion runs in your browser

FFmpeg (the same engine used by professionals) runs in WebAssembly inside the page. No bytes are sent to servers — total privacy.

Download the MP3

In seconds the .mp3 file is ready for download, with 190 kbps (VBR) quality — ideal for voice and music.

Perguntas frequentes

Need the text from this audio? Transcribe with AI — 30 min free

Criar conta gratuita →

30 minutos/mês grátis. Sem cartão de crédito.

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