The amount of caffeine in a cup of coffee varies depending on factors like the type of coffee bean, brewing method, and serving size. However, on average:
- An 8-ounce (240 ml) cup of brewed coffee typically contains about 80 to 140 mg of caffeine
- A commonly cited average is around 95 to 100 mg of caffeine per 8-ounce cup
- Some sources note a range from about 70 mg up to 150 mg or more, depending on the coffee type and preparation
- For larger servings, such as a 12-ounce cup, caffeine content can be between 113 to 247 mg
- Espresso shots (1 ounce) generally contain about 40-50 mg of caffeine , but a single shot can sometimes be around 118 mg depending on preparation
In summary, a standard cup of brewed coffee usually contains roughly 80 to 140 mg of caffeine , with 95-100 mg being a typical average figure. The exact amount depends on the coffee variety, roast, and brewing style.
