How to Translate a Video to English (Free)
You found a course, a lecture, or a tutorial that is exactly what you needed, except it is not in English. If you want to translate a video to English so you can actually follow along, you have two real choices: read English subtitles over the original audio, or have the whole thing dubbed into an English voice. Both are possible in your browser, for free, without downloading anything.
This guide covers how to translate a video to English the fast way, when to use subtitles versus dubbing, and what to check if it does not work the first time.
Subtitles or dubbing: which one for English?
When people say "translate a video to English," they usually mean one of two things. The first is English subtitles, where the spoken words are translated to English text and shown at the bottom of the screen. You keep the original audio and read along. The second is English dubbing, where the words are translated and spoken by a generated English voice, synced to the video, with the original audio lowered underneath.
Subtitles are great when you want to hear the original tone or you are in a quiet room. Dubbing is better for long content, since a two-hour course is a lot to read. You do not have to choose once and for all, though. You pick per video, and you can switch.
The fast way to translate a video to English
The quickest method is a browser extension that works right on the video player. It reads the captions the page already provides, translates them to English, and either shows them as subtitles or speaks them as a dubbed track.
Here is the flow with the Unlimited Universal Video Translator extension:
- Install the extension and open the video, whether that is YouTube, a course on Udemy or Coursera, or a standard HTML5 player.
- Turn on captions in the player. The extension translates from the caption track the page exposes, so it needs to detect one.
- Click the floating Dub button and choose English as your target language, then pick subtitles or a dubbing voice.
- Play it. For dubbing, the English speech is synced and played while the original audio is ducked down. For subtitles, English text appears over the video.
No file to download, no upload, and no account needed to start.
Translating YouTube videos to English
YouTube is the most common case, and it works well because YouTube auto-generates captions for most videos. Turn on captions in the YouTube player, click the Dub button, choose English, and you are set. If a particular video genuinely has no captions available, not even auto-generated ones, the extension has nothing to translate from, so that is the one case where it may not start.
Translating course videos to English
Course platforms like Udemy and Coursera add captions for accessibility, which makes them a good fit. A lecture in another language becomes an English-dubbed lecture you can listen to while taking notes, instead of pausing constantly to read. Each video keeps its own settings, so you can move through a course without resetting your language and voice every time.
What to check if it does not work
If English translation does not start, run through this quick list:
- Are captions on in the player? This is the most common fix. The extension needs a detectable caption track.
- Does the video have captions at all? Live streams and some uploads have none. Without captions, there is nothing to translate.
- Is the video DRM-protected? Protected streams may not work.
For ordinary educational and informational videos, captions are almost always present, so English translation just works.
Free to start, more voices on PRO
Translating a video to English is free. The free path uses Google Translate for the text and an on-device English voice that runs in your browser, with no watermark and no account. If you translate video often and want higher-quality English voices, a real-time mode, or smarter LLM translation, the PRO tier adds those. Start free and only upgrade if you need more.
Related guides
AI Video Translator and the Chrome extension guide cover the tool itself. On YouTube, the YouTube video translator guide is more specific.
Source-language guides, each covering the pitfalls specific to that pair:
Spanish ·
Chinese ·
Japanese ·
Korean ·
Arabic ·
Russian ·
German ·
French ·
Italian ·
Portuguese ·
Turkish
Frequently asked questions
How do I translate a video to English for free?
Use a browser extension that reads the video's captions, translates them to English, and either shows English subtitles or speaks an English dubbing voice. The free path needs no account and adds no watermark.
How do I translate a YouTube video to English?
Turn on captions in the YouTube player, click the extension's Dub button, choose English, and pick subtitles or dubbing. YouTube auto-generates captions for most videos, so this works on the majority of them.
Can I get an English voice over the video instead of subtitles?
Yes. AI dubbing generates an English voice, syncs it to the video, and lowers the original audio underneath. You can also choose English subtitles if you prefer to read.
Does the video need captions to translate to English?
For the in-browser method, yes. It translates from the captions the page exposes. Turn captions on first; videos with no captions, live streams, and DRM-protected content may not work.
Which sites can I translate to English?
YouTube, standard HTML5 players, and course sites like Udemy and Coursera, anywhere the page provides captions the extension can detect.
Is the English translation accurate enough for courses?
For most educational content, yes. The translation and voice are solid on the free path. If you want premium or real-time English voices, or smarter LLM-based translation, the PRO tier adds them.