Question: how much caffeine in one starbucks k-cup?
Answer: The standard cup of coffee has 120 mg of caffeine in an 8 fl oz cup. However, an 8 oz cup of coffee from a standard 2 oz K-Cup contains between 100-140 mg of caffeine. Most K-Cups consist of 2 tablespoons of ground coffee which equals 2 ounces of coffee.