One source SRT became six market-ready files with timing untouched. Our agency quoted two weeks for the same job.
English → Japanese · timing preserved: Translate Subtitles from English to Japanese
Japanese needs far fewer characters than English but is read more slowly, and politeness is built into every verb. Upload an SRT, VTT or video and get Japanese captions that read comfortably and keep the original timing.
SRT & VTT in and out · videos up to 8 GB · no credit card needed
Timing stays. Japanese comes in.
launch-video.srtENJA
100:00:01,200 --> 00:00:03,100
We rebuilt the studio in winter.冬にスタジオを作り直しました。
200:00:03,300 --> 00:00:06,000
And since then every episode sounds warmer.それ以来、どのエピソードも温かく聞こえます。
300:00:06,200 --> 00:00:07,900
People hear it right away.聴く人はすぐに気づきます。
Timecodes untouched
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What Changes When English Becomes Japanese
Three things worth knowing before you ship Japanese captions.
A 40-character English line often becomes 15 to 20 Japanese characters, yet it needs about the same time on screen: each character carries more information, and guidelines for Japanese assume about four characters per second. Professional Japanese subtitles therefore summarise rather than translate everything, keeping the meaning and dropping what the picture already shows.
English signals respect through tone; Japanese builds it into verb endings and vocabulary. A presenter addressing viewers, a salesperson talking to a client and two friends chatting each need a different level of speech. Choosing the level once and keeping it consistent matters more than any single word choice.
Japanese is written without spaces, so a line cannot simply wrap at the nearest gap. Streaming guidelines allow about 13 full-width characters per line, and a break has to fall after a particle or at the end of a phrase, never in the middle of a word or a name.
One English cue, translated into Japanese
Japanese uses a fraction of the characters and a deliberate level of politeness.
- 00:00:01,200 → 00:00:03,900
English: Thank you for waiting. Let's get started.
Japanese: お待たせしました。では、始めましょう。
- 00:00:04,300 → 00:00:06,600
English: I'll send you the details by email.
Japanese: 詳細はメールでお送りします。
The first line drops from 41 characters to 19, but it still needs nearly the same time on screen. The second uses the humble form a speaker uses toward a client, something English does not mark at all.
English → Japanese, Done Right
Japanese reads differently; the timing stays exactly where it was.
Phrased for reading speed
Cues are worded for comfortable reading in Japanese, not filled to the character limit.
One level of politeness
Polite, humble or casual speech is chosen from context and kept consistent across the file.
Cues keep their English timing
Japanese lines inherit the start and end time of each English cue, so nothing has to be re-synced.
Line breaks checked in context
Each Japanese line sits next to its English source, so a break in the middle of a word or a name is caught before export.
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Uploaded a two-hour recording during lunch — the transcript was waiting before I finished my coffee. The accuracy genuinely surprised me.
Our legal team approved it because processing stays on EU infrastructure. That alone ruled out most of the competition.
Seeing source and translation together makes QA fast. We ship subtitles the same day we cut the video.
No card, no tricks — I tested real files before paying and upgraded a week later because the workflow stuck.
Had trouble with a huge file — support walked me through batch upload the same morning. Rare these days.
Upload your English SRT or VTT file, or the video itself, and choose Japanese as the target language. BlaBlaScribe translates every line with AI and keeps the original timestamps, so the Japanese subtitles stay in sync with the speech. Fix the wording in the editor, then download SRT or VTT or export an MP4 with the subtitles burned in. Translation is available on paid plans from $14 a month.
Each Japanese character carries more meaning and takes longer to read, so subtitles are phrased for reading speed rather than translated word for word. The essential meaning stays; details the picture already shows are often left out, as in professional Japanese subtitling.
The level is inferred from the content, for example polite speech for a presenter addressing viewers, and applied consistently. Every line stays editable next to the English original if you need a different tone.
Streaming guidelines for Japanese allow about 13 full-width characters per line and two lines per cue. Because there are no spaces, lines are broken after a particle or at the end of a phrase, never inside a word.
Yes. SRT and VTT files are written in UTF-8, so kanji, hiragana, katakana and full-width punctuation come through intact in any current player.
Yes. Pick a caption style and export an MP4 with the Japanese subtitles burned in; it renders in your browser. Choose a style whose font includes Japanese characters and check the preview first.