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Subtitle translator for SRT and VTT files

Translate a subtitle file line by line with AI and keep every timestamp. Bilingual subtitles show the original and the translation together, which is useful for learning a language from films and videos.

Translate subtitles now

Drop in an SRT or VTT subtitle file and LangBox translates every line with AI, keeping the timings exactly as they are. Download bilingual subtitles with the original and the translation together, or translation-only subtitles. Free, no sign-up needed.

Drop an SRT or VTT file here

Into

SRT or WebVTT · up to 2 MB

The file is read in your browser. Only the subtitle text is sent for translation, and LangBox does not store it.

How to translate subtitles

  1. 1

    Choose the file

    Drop an .srt or .vtt file into the translator, or choose it from your computer.

  2. 2

    Pick a language

    Choose the language to translate into. The translation starts at once and runs in your browser tab.

  3. 3

    Download

    Choose bilingual or translation only, then download. The file keeps the original format and timings, so any video player can load it.

Questions

Is the subtitle translator free?
Yes. Guests get a free AI translation allowance without signing up, which is enough for many full films. If you use it all, sign in with Google for a monthly allowance.
Does it change the subtitle timings?
No. Cue numbers, timestamps and WebVTT settings are copied exactly. Only the text of each cue changes.
What are bilingual subtitles?
Each cue shows the original line with the translation under it. Language learners use them to follow a video in the language they study.
Which formats can I translate?
SubRip (.srt) and WebVTT (.vtt) files up to 2 MB. Other formats, such as .ass, can be converted to SRT in most subtitle editors first.