Calories in black coffee.
1 kcal per 100 g.
Brewed black coffee is about 1 kcal per 100 g — effectively zero. Every calorie in a coffee order is milk, cream, syrup or sugar; a latte is a glass of milk with coffee in it.
Beverages, coffee, brewed, prepared with tap water · SR Legacy (2018-04) · USDA FDC 171890
Nutrition for your portion
| Nutrient | Per 100 g | 100 g |
|---|---|---|
| Energy | 1 kcal | 1 kcal |
| Protein | 0.12 g | 0.12 g |
| Carbohydrates | 0 g | 0 g |
| Fat | 0.02 g | 0.02 g |
| Fibre | 0 g | 0 g |
| Sugars | 0 g | 0 g |
| Saturated fat | 0.002 g | 0.002 g |
| Sodium | 2 mg | 2 mg |
| Salt (calculated from sodium) | 0.005 g | 0.005 g |
| Vitamin A (RAE) | 0 ug | 0 ug |
| Vitamin D (D2 + D3) | 0 ug | 0 ug |
| Vitamin E (alpha-tocopherol) | 0.01 mg | 0.01 mg |
| Vitamin K (phylloquinone) | 0.1 ug | 0.1 ug |
| Vitamin C | 0 mg | 0 mg |
| Thiamin | 0.01 mg | 0.01 mg |
| Riboflavin | 0.08 mg | 0.08 mg |
| Niacin | 0.19 mg | 0.19 mg |
| Vitamin B6 | 0.001 mg | 0.001 mg |
| Folate, total | 2 ug | 2 ug |
| Vitamin B12 | 0 ug | 0 ug |
| Potassium | 49 mg | 49 mg |
| Calcium | 2 mg | 2 mg |
| Phosphorus | 3 mg | 3 mg |
| Magnesium | 3 mg | 3 mg |
| Iron | 0.01 mg | 0.01 mg |
| Zinc | 0.02 mg | 0.02 mg |
| Selenium | 0 ug | 0 ug |
| Iodine | Unknown | Unknown |
| Copper | 0.002 mg | 0.002 mg |
Energy comes from USDA nutrient 1008. Salt is calculated as sodium × 2.5, with unit conversion to grams. It is not a separately measured salt value.
Preparation
Black coffee is 1 kcal per 100 ml — a rounding error, and effectively zero however it is brewed. Espresso, filter, cafetière and instant all land in the same place, because the energy in coffee comes from what is added to it and nothing else. Brewing strength changes the caffeine and the taste; it does not change a figure that is already as low as a figure gets.
Logging this food
A 6 fl oz cup is 178 g and 2 kcal; an 8 fl oz cup is 237 g and 2. There is no reason to log black coffee at all, and every reason to log what goes in it: a splash of whole milk is around 9 kcal a tablespoon, a teaspoon of sugar 16, and a shop-bought latte with syrup can pass 300.
Swaps and alternatives
Black tea is also 1 kcal per 100 ml. Within this family there is nothing to choose. The swap that matters is in the cup: skim milk instead of whole is 34 kcal per 100 g against 61, and taking the sugar out removes 16 per teaspoon — three coffees a day is 175 kcal a week from the sugar alone.