An average cup of halfcaff coffee measuring 16 ounces contains 139 milligrams of caffeine Whereas an average cup of caffeinated coffee measuring 16 ounces contains around 1 milligrams of caffeine Hence the reduction in caffeine in a halfcaff coffee is not just half but more than 90 percentCup of coffee caffeine contentAccording to the usda national nutrient database a 240 millilitre 8 us fl oz cup of coffee brewed from grounds contains 95 mg caffeine whereas an espresso 25 ml contains 53 mg Keep in mind that the actual caffeine content of a cup of coffeeTea contains varying levels of caffeine, but the amount is usually smaller than that of a cup of coffee of a similar size For example, an 8oz cup of green tea contains about 28 mg of caffeine, while black tea has about 47 mg of caffeine on the same serving size
How Much Caffeine Is In Your Coffee Happybarista