A standard 1-ounce espresso shot often lands near 60–65 mg of caffeine, while a double shot commonly lands near 120–130 mg.

Most decaf coffee still carries 2–15 mg of caffeine per 8-oz cup, so “decaf” means low-caffeine, not zero-caffeine.

Unsweetened cocoa powder has about 12 mg of caffeine per tablespoon (5 g), with brand and processing shifting the number.

Decaf espresso usually lands in single-digit milligrams per shot, yet the exact caffeine shifts with the beans, the decaf method, and the recipe.

A typical 8-ounce brewed coffee sits near 80–100 mg of caffeine, with wide swings from bean choice, dose, and brew style.

A 12-oz can of Pepsi has 38 mg of caffeine, while Diet Pepsi has 34 mg and Pepsi Zero Sugar lists 38 mg per 12-oz can.

A standard 8-ounce cup of black tea often lands near 40–60 mg of caffeine, while brewed coffee is often near 80–120 mg, based on how each is made.

A 23-oz can of AriZona Green Tea often lands near 22 mg of caffeine, based on the brand’s 7.5 mg per 8-oz serving figure.

A standard latte usually contains 45–135 mg of caffeine, depending on whether it’s made with one, two, or three espresso shots.

A 12-oz can of Barq’s Root Beer contains 22 mg of caffeine.