Daily How Much

A 12-oz can contains 41 mg of caffeine, listed by the brand for the U.S. can.

A 12-oz can contains 54 mg of caffeine, while a 20-oz bottle contains 91 mg.

Diet Dr Pepper has 41 mg of caffeine per 12 fl oz can in the U.S., which puts it in the mid-range for caffeinated soda.

A 12-oz can of Diet Mountain Dew contains 54 mg of caffeine.

One 20-oz bottle of Diet Coke has about 77 mg of caffeine in the U.S., based on Coca-Cola’s stated 46 mg per 12-oz serving scaled to 20 oz.

One 12-fl-oz can of Diet Coke lists 46 mg of caffeine, while caffeine-free Diet Coke lists 0 mg.

An 8-oz brewed coffee is 96 mg; brewed decaf is 1 mg, with many decaf cups landing at 2–15 mg.

A decaf Americano usually lands around 5–20 mg of caffeine in a 12–16 oz cup, with the exact hit set by shots, beans, and the decaf method.

A mug of decaf instant coffee tends to land around 2–15 mg of caffeine, with the swing driven by brand, scoop size, and mix strength.

Most decaf tea lands around 1–5 mg caffeine per 8 oz cup, with some brews creeping higher based on leaf, brand, and steeping.