How much caffeine in a cup of coffee

The amount of caffeine in a cup of coffee can vary significantly based on several factors, including the type of coffee beans, the brewing method, and the serving size. Here are some general guidelines:

Typical 8-Ounce Cup of Brewed Coffee

• An average 8-ounce cup of brewed coffee typically contains around 95 milligrams of caffeine, according to the USDA134.

Variations in Caffeine Content

• The caffeine content can range from as low as 57 milligrams in an 8-ounce cup of instant coffee to as high as 485 milligrams in some exceptional cases, though this is not typical13.

Espresso

• A single 1-ounce shot of espresso contains approximately 63 milligrams of caffeine. However, most espresso-based drinks, like lattes and cappuccinos, often include two shots, which would be around 126 milligrams of caffeine124.

Decaffeinated Coffee

• Decaf coffee is not completely caffeine-free; an 8-ounce cup of decaf coffee usually contains about 2-2.4 milligrams of caffeine134.

Factors Affecting Caffeine Content

• The type of coffee bean (e.g., Arabica vs. Robusta), the roast level (light roast generally has more caffeine than dark roast), the brewing method (e.g., drip, pour-over, cold brew), and the amount of coffee grounds used can all influence the caffeine content134.

Larger Servings

• Many coffee shops serve larger portions, such as 12- or 16-ounce cups, which can significantly increase the total caffeine intake. For example, a 16-ounce latte might contain around 120 milligrams of caffeine1.

In summary, while a standard 8-ounce cup of brewed coffee contains about 95 milligrams of caffeine, the actual amount can vary widely depending on the specific type and preparation of the coffee.