How much caffeine is in an average cup of coffee, and how many cups can one drink before feeling its effects? - Quora

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Answer (1 of 5): The caffeine content in a cup of coffee can vary widely depending on factors such as the type of coffee bean, the brewing method, and the serving size. On average, an 8-ounce (240-milliliter) cup of brewed coffee contains approximately 95 milligrams of caffeine, but this can rang