Translate English subtitles to Vietnamese
Last updated September 2026
Vietnamese subtitles serve Vietnam's fast-growing online video audience. This page explains how to turn an English .srt or .vtt file into Vietnamese without uploading it anywhere: the translation runs on your own computer using the translation model built into desktop Google Chrome (138+) or Microsoft Edge. Vietnamese uses the Latin alphabet with stacked diacritics for tones (ă, â, ơ, ư plus five tone marks), so a single letter can carry two accents. Below are the steps plus Vietnamese-specific things to check before you publish.
How to do it
- Open the translator in desktop Chrome 138+ or Microsoft Edge — the link on this page presets English → Vietnamese.
- Drop your English .srt or .vtt file onto the page (or click to choose it). Nothing is uploaded; the file is read locally.
- Confirm the languages show English → Vietnamese and press Translate. The first time, the browser downloads the English–Vietnamese model once, which can take a minute.
- Watch cues translate in place. Timestamps, cue numbers and tags such as <i> stay exactly as they were.
- Download the Vietnamese file (same format as the input) and load it in your player or upload it to your video platform.
Tips
- Stacked tone marks need a font with full Vietnamese coverage; some TV players' default fonts render them badly.
- Pronouns in Vietnamese depend on age and relationship (anh, chị, em…). The model picks generic ones — adjust for key characters.
- Keep UTF-8 (NFC) — decomposed accents from some Mac tools can display as separate marks.
FAQ
Which pronouns does it use for characters?
Vietnamese pronouns depend on the speakers' relationship, which the model can't see from one line. Expect generic choices and review dialogue between main characters.
Is translating English subtitles to Vietnamese really free?
Yes. There's no account, no per-file limit and no paid tier — the translation is done by your browser's built-in on-device model, so there's no server cost to pass on.
Does it work on my phone?
Not at the moment. The built-in Translator API is only available in desktop Google Chrome 138+ and Microsoft Edge. Mobile browsers, Firefox and Safari don't offer it yet.