AI Calculator
Context window comparator
Translate tokens into pages, words, and rough document scale before choosing a model.
Best for: Long document QA, paper summaries, codebase reading, and contract analysis
This is a rough estimate. Real token counts depend on language, punctuation, code, tables, and the model tokenizer.
Rough capacity
Roughly 192,000 Chinese characters or 96,000 English words.
At 900 Chinese characters per page, that is about 213 pages.
Leave room for answers, tool calls, and system prompts; keep actual input under about 89,600 tokens.