how much caffeine in starbucks glass coffee

How Much Caffeine Is in Starbucks Glass Coffee?

Starbucks glass coffee is the perfect way to get your day kicked off the right way, but it’s also important to know what goes into your cup. Before you grab a cup of Starbucks glass coffee, it’s important to know how much caffeine is in your drink.

Caffeine Contained in a Serving of Starbucks Glass Coffee

The amount of caffeine in each cup of Starbucks glass coffee varies depending on the size of the cup and the strength of the brew. The following list shows the amount of caffeine in each size cup of regular Starbucks brewed coffee:

  • Tall (12 ounces): 180 mg of caffeine
  • Grande (16 ounces): 260 mg of caffeine
  • Venti (20 ounces): 330 mg of caffeine

Factors That Can Affect the Amount of Caffeine in Starbucks Glass Coffee

In addition to the size of the cup, there are several factors that can affect the amount of caffeine in Starbucks glass coffee.

  • Water temperature and brewing time: If water reaches a higher temperature, the amount of caffeine extracted from the beans is also increased
  • The type of beans: Some varieties of beans contain more caffeine than others
  • The roast of the beans: A darker roast typically contains higher caffeine levels than lighter roasts
  • The amount of coffee grounds used: More grounds will lead to a higher caffeine content


Overall, Starbucks glass coffee can contain between 180 and 330 mg of caffeine per cup depending on the size, the type of beans, the roast of the beans, and the amount of coffee grounds used. If you’re looking for a milder cup of coffee with less caffeine, a lighter roast and a smaller size cup may be your best bet. No matter what, always know how much caffeine is in your cup before you drink!

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