SubCaptionsTranslate SRT subtitles to Japanese
Translate your .srt or .vtt subtitles from English into Japanese (日本語) in a couple of clicks. Japanese reaches roughly 125M+ speakers, where line length and reading speed matter more than almost anywhere. The translation keeps your exact timecodes, and you can preview the Japanese captions on the real video before you export.
How it works
- Drop your English .srt or .vtt file onto the page (or paste the text).
- Japanese is pre-selected as the target, just hit Translate.
- Review the Japanese translation and tweak any line inline.
- Preview it on the actual video to check reading speed and line length.
- Download your Japanese subtitles as .srt or .vtt.
Frequently asked questions
Is the English-to-Japanese translation any good?
It's powered by a large language model that translates for natural spoken register, not word-for-word, which matters for subtitles, where literal translations read awkwardly. You can edit any line before exporting, so you stay in control of the final Japanese text.
Will the timing still match after translating to Japanese?
Yes. Only the text is translated; every start and end timecode is preserved exactly, so the Japanese track stays in sync. Use the video preview to confirm the Japanese lines are short enough to read in the time available.
Is it really free to translate SRT to Japanese?
Single files up to the free line limit are free with no signup. Larger files and batch jobs are covered by the paid Pro tier.
Are my files uploaded to a server?
No. Your subtitle file is parsed entirely in your browser. Only the caption text is sent to the translation engine, and it is never stored or logged.