Decaf coffee from Starbucks contains 15–30 mg of caffeine, depending on cup size. Bottom Line: An 8-oz, brewed coffee from Starbucks contains 180 mg of caffeine. A single espresso and espresso-based drinks contain 75 mg, while an 8-oz cup of decaf coffee contains about 15 mg of caffeine. read more
The caffeine amounts of the espresso-based drinks show that a Tall Latte (and Cappuccino) has just a single shot of coffee. For a 12 oz cup size – this is quite weak and has considerably less caffeine than a brewed coffee of the same size. read more