Home › Free tools › OPUS to MP3
WhatsApp voice messages saved as files are usually in OPUS format; Telegram's are usually OGG. Many programs can't open them: here you can convert them to MP3 without uploading them anywhere.
Your file never leaves your device: it's converted right in your browser. Free, no account needed.
“Transcribe to text” opens TraScrivo with the file already loaded: free for files up to 30 minutes, even without an account. To transcribe, the audio is processed online and then deleted.
OPUS is very efficient with speech: the files are tiny and sound good, but many players, editing programs and websites only accept MP3. Converting fixes that.
For voice messages, 64 kbps is enough: the file stays small and the voice clear.
You can transcribe it from here with Transcribe to text, or forward it straight to our WhatsApp and Telegram bot: the text comes back in the chat. More details in our guide to WhatsApp voice messages.
Yes, with no account, no watermark and no limit on the number of voice messages.
Yes. Telegram voice messages are usually OGG files, and the tool reads them just like OPUS.
No. The conversion happens in your browser and the file never leaves your device.
64 kbps is enough for speech; choose 128 kbps if the message contains music.
Yes, one after another: after each conversion, press “Convert another file”.