Coffee & Espresso · Drink database
Caffeine in Espresso Shot
192 mg
per triple (3 oz) High
≈ 64.0 mg per fl oz
Halfway to the ceiling in one go. Respect.
Every serving size
| Serving | Caffeine | % of 400 mg day | Finish by (10:30 PM bed) |
|---|---|---|---|
| Single (1 oz) (1 oz) | 64 mg | 16% | 8:43 PM |
| Doppio (2 oz) (2 oz) | 128 mg | 32% | 3:43 PM |
| Triple (3 oz) (3 oz) | 192 mg | 48% | 12:47 PM |
Cutoff column: average metabolism (5 h half-life), ~50 mg bedtime threshold — run it with your bedtime →
How it compares
Espresso Shot 192 mg
Green tea (8 oz) 28 mg
Black tea (8 oz) 47 mg
Brewed coffee (8 oz) 96 mg
Monster (16 oz) 160 mg
Bang (16 oz) 300 mg
Spends a serious share of the 400 mg daily ceiling. Treat it as a morning-to-early-afternoon drink unless the calculator says otherwise. At 192 mg per triple (3 oz), this drink is 48% of the FDA's 400 mg daily ceiling for healthy adults.
Per ounce espresso is the strongest common coffee (~64 mg/oz), but a single shot still totals less than half an 8 oz drip cup.
Source: USDA FoodData Central · confidence: high
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Related reading: coffee vs tea vs energy drinks · when to stop before bed