AI Subtitle Translator
Fast. Private. Perfect.
Translate your subtitles into any language using AI. Professional-quality translation with your own API key. No uploads, fully private.
Drag & drop your subtitle file here
or click to browse
SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI, TXT
How It Works
Select your subtitle file.
Enter your OpenAI API key (get one at platform.openai.com).
Choose the source language (or use auto-detect) and the target language.
Select an AI model based on your quality and cost preferences.
Click Translate. The tool sends subtitle text in batches to the AI for translation.
Download the translated subtitle file in your chosen format.
Why Choose AllSubConverter?
Your Privacy Matters
Everything runs in your browser. Your files are never uploaded.
Lightning Fast
Optimized processing engine converts files in seconds.
Truly Unlimited
No file size limits. No daily limits. Completely free.
Works Everywhere
Works on Windows, Mac, Linux, iOS, Android - any modern browser.
Key Features
Common Use Cases
Foreign Films
Translate subtitles for movies or shows that only have subtitles in a language you don't speak.
Language Learning
Generate bilingual subtitles by translating foreign content into your native language.
Content Localization
Translate your video subtitles for international audiences across multiple languages.
Academic Research
Translate foreign-language documentary or lecture subtitles for research purposes.
Travel Content
Translate travel vlog or guide subtitles to reach a global audience.
Corporate Videos
Translate training or promotional video subtitles for multilingual teams.
Frequently Asked Questions
Yes. This tool uses your own OpenAI API key to translate subtitles. You can get one at platform.openai.com. The key is stored only in your browser session and sent directly to OpenAI's servers, never to ours.
The tool supports 20+ common languages including English, Chinese (Simplified and Traditional), Japanese, Korean, Spanish, French, German, Portuguese, Italian, Russian, Arabic, Hindi, Thai, Vietnamese, Indonesian, Turkish, Dutch, and Polish. You can also type any language name manually.
Yes, but one at a time. After translating, click 'Translate Another' and select a different target language with the same file.
Cost depends on the model you choose and the number of subtitle cues. GPT-4o mini is very affordable (typically under $0.01 for a full movie). GPT-4o costs more but produces higher-quality translations. You can check current pricing at openai.com/pricing.
Yes. Your subtitle file and API key are processed entirely in your browser. Translation requests go directly from your browser to the OpenAI API. We never see or store your files or key.
Input: SRT, VTT, ASS, SSA, LRC, SBV, TTML, SCC, STL, SMI. Output: SRT, VTT, or ASS.
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