How Much Caffeine Is in a Cup of Coffee?

Average Content A typical 8-ounce cup of brewed coffee contains around 95 milligrams of caffeine.

Range The caffeine content can range from 70 to 140 milligrams depending on various factors.

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Espresso A 1-ounce shot of espresso has about 63 milligrams of caffeine but is usually consumed in smaller amounts.

Decaf Coffee:  Even decaffeinated coffee contains 2 to 5 milligrams of caffeine per 8-ounce cup.

Brewing Method The way coffee is brewed (e.g., drip, French press, espresso) significantly impacts its caffeine content.

Bean Type Different coffee beans (Arabica vs. Robusta) have different caffeine levels, with Robusta beans containing more.

Grind Size Finer coffee grounds can result in a higher caffeine content due to increased extraction.

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