Calories in coffee (black coffee)
Brewed, black. 1 kcal (4 kJ) per 100 g. Choose a portion below and every figure on the page updates.
Black coffee, brewed with water and served without milk or sugar, is almost calorie-free: 100 g has about 1 kcal (4 kJ), and even a large 355 ml mug comes to roughly 4 kcal (15 kJ). The traces of energy come from tiny amounts of protein and oil extracted from the beans. Espresso is similar. The calories in coffee drinks come from what is added.
Where the energy comes from
Share of total energy contributed by each macronutrient, using the standard 4/4/9 kcal per gram factors:
No measurable energy from protein, carbohydrate, fat or alcohol.
Full nutrition breakdown
Values shown for 240 g.
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 2 kcal | – |
| Energy | 10 kJ | – |
| Protein | 0.3 g | <1% |
| Total fat | 0 g | <1% |
| Saturated | 0 g | <1% |
| Monounsaturated | 0.04 g | – |
| Polyunsaturated | 0 g | – |
| Cholesterol | 0 mg | 0% |
| Total carbohydrate | 0 g | 0% |
| Sugars | 0 g | – |
| Fibre | 0 g | 0% |
| Caffeine | 96 mg | – |
| Water | 238.5 g | – |
| Vitamins | ||
| Vitamin A | 0 µg | 0% |
| Vitamin C | 0 mg | 0% |
| Vitamin E | 0.024 mg | <1% |
| Vitamin K | 0.24 µg | <1% |
| Thiamin (B1) | 0.034 mg | 3% |
| Riboflavin (B2) | 0.182 mg | 14% |
| Niacin (B3) | 0.458 mg | 3% |
| Vitamin B6 | 0.002 mg | <1% |
| Folate | 4.8 µg | 1% |
| Choline | 6.2 mg | 1% |
| Minerals | ||
| Calcium | 4.8 mg | <1% |
| Iron | 0.024 mg | <1% |
| Magnesium | 7.2 mg | 2% |
| Phosphorus | 7.2 mg | <1% |
| Potassium | 117.6 mg | 3% |
| Sodium | 4.8 mg | <1% |
| Zinc | 0.048 mg | <1% |
| Copper | 0.005 mg | <1% |
| Selenium | 0 µg | 0% |
Daily Values are the FDA reference intakes for adults and children aged 4 and over, based on a 2,000 kcal diet. They are a labelling standard, not a personal target.
Common portions
| Portion | Grams | kcal | kJ | Protein g | Carbs g | Fat g |
|---|---|---|---|---|---|---|
| 1 cup (8 fl oz, 240 ml) | 240 | 2 | 10 | 0.3 | 0 | 0 |
| 1 mug (12 fl oz, 355 ml) | 355 | 4 | 15 | 0.4 | 0 | 0.1 |
Things worth knowing
- Espresso is slightly more concentrated than filter coffee: USDA lists it at about 9 kcal per 100 g, which is still only around 3 kcal (11 kJ) in a 30 ml shot.
- Milk and sugar are where the calories come from: a tablespoon of whole milk adds about 9 kcal (38 kJ) and a level teaspoon of white sugar about 16 kcal (68 kJ).
- An 8 fl oz (240 ml) cup of brewed coffee contains roughly 96 mg of caffeine, though the real amount varies with the beans, grind and brewing method.
- Milk-based coffees are a different category: a whole-milk cappuccino has about 27 kcal per 100 g, or about 130 kcal (542 kJ) for a 16 fl oz medium.
Converting these figures
One 1 cup (8 fl oz, 240 ml) of coffee is 2 kcal, which is 10 kJ. To convert any other figure, divide kilojoules by 4.184 for calories, or use the converter on the home page.
It takes 23,901 g of coffee to reach 1,000 kJ (239 kcal). See how that compares with other foods on the 1000 kJ to calories page.
Similar foods
Compare all 13 drinks in one table →
Source: USDA FoodData Central, FNDDS 92101000. Values are averages; individual samples vary with variety, growing conditions, and preparation.