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A typical 8-oz cup of brewed tea lands around 15–60 mg of caffeine, with leaf style and brew choices shifting it up or down.

A tablespoon of ground coffee often contains about 50–110 mg of caffeine, depending on the bean type, roast, and how tightly it’s packed.

A 12-ounce latte most often lands between 60 and 150 mg of caffeine, based on how many espresso shots go in.

A 12-fl-oz serving of Dr Pepper lists 41 mg of caffeine.

A 12-ounce mug of brewed coffee often lands near 140 mg of caffeine, with a common swing from 90–200 mg based on beans and brewing.

A 12-oz can of Coca-Cola contains about 34 mg of caffeine.

A 12-oz Diet Mountain Dew contains 54 mg of caffeine, a mid-range hit that’s noticeable without matching most coffee servings.

A 12-oz can of Diet Coke contains 46 mg of caffeine.

A 12-oz can contains 34 mg of caffeine, which sits far below most coffee drinks yet can still nudge sleep if you sip it late.

A 12-oz can of Diet Dr Pepper contains about 41 mg of caffeine in the U.S.