How Much Caffeine in a Shot of Espresso? (The Exact Numbers)
A single shot of espresso (1 oz / 30 ml) contains 63–75 mg of caffeine. A double shot (doppio) contains 126–150 mg. That’s less than most people expect — and less than a standard 8 oz drip coffee, which averages 95 mg. The confusion comes from concentration: espresso is highly concentrated, but you drink far less of it. Espresso Caffeine by Shot Type Shot Type Volume Caffeine Single shot (solo) 1 oz / 30 ml 63–75 mg Double shot (doppio) 2 oz / 60 ml 126–150 mg Ristretto (short shot) 0.75 oz / 22 ml ~50–65 mg Lungo (long shot) 1.5 oz / 45 ml ~75–90 mg Note: The FDA considers up to 400 mg/day safe for healthy adults. That’s roughly 5–6 single espresso shots. ...