How Much Caffine is in a Cup of Coffee?

Drip coffee has between 115 and 175 mg of caffeine, where as Espresso has only 100. Brewed coffee, like you’d make at home, has between 10 and 135 mg of caffeine, and instant has only 65 to 100 mg of caffeine. Decaf also has it’s share of caffeine, though it’s much lower. One cup of brewed decaf coffee has 3-4 mg of caffeine and instant has 2-3 mg of caffeine.