A standard 12-ounce (or "small") latte made with a single shot of espresso typically contains around 63 to 75 milligrams of caffeine. If you opt for a larger 16-ounce "grande," expect about 150 milligrams—that’s two shots, baby.
You’re essentially getting the caffeine of a strong cup of drip coffee, but wrapped in a velvety, milky hug. That’s the magic of the latte: it’s coffee’s sophisticated, slightly more forgiving cousin.