Translate a video from English to Japanese
Translate your video from English to Japanese in minutes, while preserving each speaker’s voice with perfect lip-sync.
Translated video examples
Upload your video
Your first minute of video is completely free. We’ll trim any longer videos.
Choose a file
Use a YouTube video that clearly shows someone speaking.
Translate to
If your video features people speaking, we'll sync their lip movements to the translated audio.
Upgrade to generate your translated video without a watermark.
Subtitles are auto‑generated for dubbed videos and viewers can toggle them on or off in the Multilingual Player.
AI dubbing supports multiple speakers and automatically preserves each speaker’s voice.
Control whether the video duration stays fixed or adjusts for translation.
By using this service, you confirm you have all necessary rights, licenses and permissions to upload and dub this content, and that your use of any dubbed content will be in accordance with the Acceptable Use Policy and in compliance with applicable regulations related to intellectual property and data privacy.
Remove watermarks and elevate your videos.
- Deliver translated videos without watermarks.
- Edit translations easily and securely.
- Dub videos in all available languages and dialects.
- Perfect for training, marketing and sales videos.
Fast, accurate English to Japanese video translation
Keep original voices in Japanese
Voice cloning recreates each speaker in Japanese, so your video sounds like the same people rather than a generic narrator.
Natural, accurate lip sync
Synthesia matches each speaker's lip movements to the Japanese audio, so your video looks recorded in Japanese, not dubbed over it.
Subtitles in Japanese and English
Get captions in both languages automatically. Viewers can turn them on or off, or switch between the two, in the Multilingual Player.
How to translate a video from English to Japanese
Translate an English video into Japanese in four simple steps: upload your video, choose Japanese, review the result, and share it with a link.
Upload your video
Add an MP4, MOV, or WEBM file, or paste a YouTube link. Synthesia detects the English audio automatically, so there's nothing to set up.
Pick your target languages
Select Japanese as your target language, and turn on lip sync if there are people speaking on camera. Then click Translate for Free.
Review and fine-tune
Watch the Japanese version, edit any wording in the transcript, or swap in a different AI voice until it sounds exactly right.
Publish with one smart link
Your video is ready in minutes. Share one player link and viewers land on the Japanese version, with the option to switch back to English anytime.
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Rated 4.7/5 from 2,000+ reviews
Translate videos in 140+ languages
All your video translation questions answered
How does English to Japanese translation work?
Upload an English video and Synthesia transcribes the audio, translates it into Japanese, clones each speaker's voice, and re-syncs their lip movements, giving you a finished Japanese video without a studio or voice actor.
Is it free to translate my video from English to Japanese?
Yes. Your first minute is free to translate right here, and you can dub longer videos for free inside the app.
Do I get subtitles in both Japanese and English?
Yes. Subtitles are generated automatically in the language of your script, so you can have both Japanese and English captions, and viewers can toggle them on or off in the Multilingual Player.
Will the lip movements match the Japanese audio, even though the video was filmed in English?
Yes. With lip sync on, Synthesia adjusts each speaker's mouth movements to fit the Japanese audio, so the result looks like it was filmed in Japanese.
Does the Japanese version keep the original voice?
Yes. Voice cloning preserves the original speaker's tone and character, so the Japanese version still sounds like them.
ow accurate is the English to Japanese translation?
It's highly accurate and preserves the speaker's meaning and identity. You can also edit the transcript yourself to fine-tune technical terms, brand names, or specific phrasing before you export. Plus you can tweak translations after video generation.
Can I translate YouTube videos from English to Japanese?
Yes. Just paste the YouTube link and Synthesia handles the transcription, translation, and lip sync for you, with nothing to download or upload.
Can I translate a podcast or multi-speaker video into Japanese?
Yes. Synthesia identifies each speaker, dubs them into Japanese with their own cloned voice, and keeps everyone lip-synced, which makes it ideal for podcasts, interviews, and panels.
