Live captions and translation for your video calls

DuoVox listens to the sound your Windows PC is playing and shows what people say as live captions, with a translation side by side. It works with Microsoft Teams, Zoom, Google Meet, WhatsApp and any other app or browser call — nothing joins the meeting and no plugin is needed.

Get it on the Microsoft Store

How it works

1. Install DuoVox from the Microsoft Store and open it.
2. Choose the two languages of the conversation. DuoVox detects which one is being spoken.
3. Set the audio source to System Audio with the headphone button in the toolbar, then press Start.
4. Join your call as usual. DuoVox captions what the other people say and translates it as they speak.

System Audio captions what your PC plays, so it hears the other people on the call. To caption people in the same room, switch the source to PC / Desk Mic or Headset Mic.

Why use DuoVox on calls

• Both languages at once. The original words and the translation appear side by side, so you can check one against the other.
• Any calling app. If your PC can play it, DuoVox can caption it: meetings, webinars, interviews and video messages.
• Nothing joins the meeting. DuoVox runs only on your PC, so nobody else has to install or approve anything.
• Free and offline to start. The Free plan runs entirely on your computer in 30 languages: no account, no internet connection, no time limit.

Free, Standard or Professional

Free captions and translates on your device. Standard and Professional use cloud AI for higher accuracy and more languages — 33 on Standard and 43 on Professional — and include hours every month; Pay-As-You-Go hours never expire. On paid plans, call audio is sent to our AI providers in real time to produce the captions and is not stored by us. See plans and prices.

Good to know

• DuoVox is an assistive tool, not a certified or human interpreter. Automated captions and translations can contain errors, so check anything important.
• Do not rely on it as the only source of meaning in medical, legal, safety-critical or other high-stakes situations.
• Let the people on the call know you are using live captions, especially where the law or your organisation requires it.
• DuoVox is available for Windows 10 and Windows 11. It is not yet available in the EU or EEA.

More about translating Teams meetings, Zoom meetings, Google Meet calls, WhatsApp calls, Discord voice chat and YouTube videos, and about live captions with translation on any Windows PC.

Which languages are covered on each plan? See the language list.