Transcribe WhatsApp voice messages
Transcribe WhatsApp voice messages (.opus) to text free. Save the audio and drop it in. No upload, no signup, works in your browser.
Drop your video or audio file here
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MP4 · MOV · WebM · MKV · AVI · MP3 · WAV · M4A and more
🔒 100% private: transcription runs in your browser. Your file is never uploaded.
Got a five-minute voice note you can’t listen to right now? Save it from WhatsApp and FreeTranscribe turns it into text you can read in a minute or two, or keep as a written record of what was said.
WhatsApp has started adding its own voice-message transcripts in some languages and regions. When yours doesn’t have them, or you want the text as a file, use this. Voice messages are personal, so they’re transcribed on your device and never uploaded.
How to save a WhatsApp voice message
- Android: press and hold the voice message, tap Share, and save it to your files (or send it to yourself). The file is usually an .opus file.
- iPhone: press and hold the voice message, choose Forward, then tap the Share icon and Save to Files.
- WhatsApp Web or Desktop: open the voice message’s menu and choose Download.
How it works
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Drop your file
Nothing is uploaded. The file stays on your device the whole time.
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AI transcribes locally
OpenAI’s Whisper model runs in your browser, so no server ever sees your file.
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Copy or download
Plain text, or timestamped SRT and VTT subtitles ready to use anywhere.
Frequently asked questions
What is an .opus file?
Opus is the audio format WhatsApp uses for voice messages. Most browsers decode it directly, and a built-in decoder handles the rest.
Can it transcribe voice notes in other languages?
Yes. Whisper detects the spoken language automatically. For very short notes, choosing the language manually can improve accuracy. You can also translate the note into English.
Does this work for Telegram or Signal voice messages?
Usually, yes. Save the audio file and drop it in; common audio formats (OGG, OPUS, M4A, MP3) are all supported.