AI Context Window Calculator

How much can each model actually hold? Compare context limits across GPT-4, Claude, Gemini, and more.

Tokens (or use the fields below to convert)

Words

Characters

Context Window Comparison

Model	Tokens	~Pages	~Words	Access

Estimates: 1 token ≈ 0.75 words ≈ 4 characters ≈ 0.00075 pages (250 words/page). Actual varies by content and model.