how many carbs in a 12 oz cup of coffee?
Black coffee and espresso A 12-ounce (355-ml) serving of black coffee contains less than 1 gram of carbs, while a 1-ounce (30-ml) shot of espresso provides around 0.5 grams ( 1 , 2 ). The caffeine content of a drink does not affect its carb content ( 3 , 4 ).