How much caffeine is in a double shot of espresso?

A double shot of espresso, often called a 'doppio,' is the standard unit of measurement for most espresso-based drinks like lattes and cappuccinos. Because espresso is a concentrated extraction, the caffeine content is high relative to the volume of liquid. On average, you can expect about 60 to 75 milligrams of caffeine per single shot, meaning a double shot delivers roughly 120 to 150 milligrams.

However, these numbers are not fixed. The caffeine content is heavily influenced by the type of coffee used. Robusta beans, for example, contain nearly twice the caffeine of Arabica beans. If your local cafe uses a blend that includes Robusta, your double shot will be significantly more caffeinated than one made with 100% Arabica. Additionally, the 'dose'—the weight of the dry coffee grounds—is the most important variable. A larger basket holding 20 grams of coffee will produce a more caffeinated shot than a smaller basket holding 16 grams.

Extraction time and grind size also play a role, though they are secondary to the dose. A longer extraction might pull slightly more caffeine, but it also risks over-extracting bitter compounds. Most baristas aim for a specific yield to balance flavor, which naturally limits how much caffeine is pulled into the cup. The result is a consistent, albeit variable, caffeine delivery that is designed for intensity.

In practice, if you are tracking your caffeine intake, it is safer to assume the higher end of the range—around 150 milligrams—for a double shot. This helps prevent accidental over-consumption, especially if you are drinking multiple espresso-based beverages throughout the day. Remember that the 'strength' you taste is a combination of caffeine, oils, and dissolved solids, so a shot that tastes 'strong' isn't necessarily the one with the most caffeine.