One cup contains approximately 100 mg of caffeine. The exact amount depends on the cup's volume, the type and characteristics of the specific coffee, and the type of drink. Here are approximate values for popular drinks:
Latte (400 ml/13.5 fl oz) — 200–360 mg
Espresso (70–80 ml/2.4–2.7 fl oz) — 120–200 mg
Cappuccino (200 ml/6.8 fl oz) — 100–136 mg
Americano (120 ml/4 fl oz) — 85–120 mg
Turkish coffee (200 ml/6.8 fl oz) — 76–130 mg
Instant coffee (200 ml/6.8 fl oz) — 62–96 mg