Brewed coffee or espresso, calories and caffeine
Black coffee has 2 calories a cup, and espresso has 3 an ounce
An 8 fl oz cup of black brewed coffee has 2 calories. A fluid ounce of espresso has 3.
Milk, cream, sugar and syrup aren't in those numbers. Ordering a latte or sweetening your cup? Tell TrueCal what went into it and review the estimate.
USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. Source checked September 29, 2026.
Caffeine by the cup and by the ounce
USDA lists 212 mg of caffeine per 100 g for espresso and 40 mg for brewed coffee.
A serving tells a different story. An 8 fl oz cup of brewed coffee has 94.8 mg, a fluid ounce of espresso has 62.8 mg, and 2 fl oz of espresso has 125.5 mg.
For caffeine in other coffee drinks, see how much caffeine is in coffee.
USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. Source checked September 29, 2026.
Cups, fluid ounces and decaf
USDA's cup of brewed coffee weighs 237 g, and its fluid ounce of espresso weighs 29.6 g. A smaller 6 fl oz cup of brewed coffee still rounds to 2 calories.
| Portion | Weight | Calories kcal | Protein g | Carbs g | Fat g | Fiber g | Sugar g | Sodium mg | Caffeine mg | Portion source |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 cup brewed coffee | 237 g | 2 | 0.3 | 0 | 0 | 0 | 0 | 4.7 | 94.8 | USDA portion, 1 cup, 8 fl oz |
| 6 fl oz brewed coffee | 178 g | 2 | 0.2 | 0 | 0 | 0 | 0 | 3.6 | 71.2 | USDA portion, 6 fl oz |
| 1 fl oz espresso | 29.6 g | 3 | 0 | 0.5 | 0.1 | 0 | 0 | 4.1 | 62.8 | USDA portion, 1 fl oz |
| 2 fl oz espresso | 59.2 g | 5 | 0.1 | 1 | 0.1 | 0 | 0 | 8.3 | 125.5 | 2 fl oz, computed from USDA's 1 fl oz |
| 1 cup decaf brewed coffee | 237 g | 0 | 0.2 | 0 | 0 | 0 | 0 | 4.7 | 2.4 | USDA portion, 1 cup, 8 fl oz |
| 1 fl oz decaf espresso | 29.6 g | 3 | 0 | 0.5 | 0.1 | 0 | 0 | 4.1 | 0.3 | USDA portion, 1 fl oz |
USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water, decaffeinated. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared, decaffeinated. Source checked September 29, 2026.
What's in a cup of black coffee
The nutrition table below is for a cup of brewed coffee. It has 0.3 g of protein and no carbs or fat. Espresso lists 1.7 g of carbs per 100 g, which is 0.5 g in a fluid ounce.
Having it with breakfast? Look up the rest of the plate in the full list of calorie references.
| Nutrient | 1 cup brewed coffee | Per 100 g |
|---|---|---|
| Calories | 2 kcal | 1 kcal |
| Protein | 0.3 g | 0.1 g |
| Carbs | 0 g | 0 g |
| Fat | 0 g | 0 g |
| Fiber | 0 g | 0 g |
| Sugar | 0 g | 0 g |
| Sodium | 4.7 mg | 2 mg |
USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. Source checked September 29, 2026.
Regular and decaf, brewed and espresso
Decaf brewed coffee is listed at 0 calories and 1 mg of caffeine per 100 g, against 1 calorie and 40 mg for regular brewed coffee.
Decaf espresso matches regular espresso at 9 calories per 100 g. Its caffeine is 1 mg per 100 g, against 212 mg for regular.
| Preparation | Weight | Calories kcal | Protein g | Carbs g | Fat g | Fiber g | Sugar g | Sodium mg | Caffeine mg |
|---|---|---|---|---|---|---|---|---|---|
| Brewed coffee | 100 g | 1 | 0.1 | 0 | 0 | 0 | 0 | 2 | 40 |
| Espresso, restaurant-prepared | 100 g | 9 | 0.1 | 1.7 | 0.2 | 0 | 0 | 14 | 212 |
| Decaf brewed coffee | 100 g | 0 | 0.1 | 0 | 0 | 0 | 0 | 2 | 1 |
| Decaf espresso, restaurant-prepared | 100 g | 9 | 0.1 | 1.7 | 0.2 | 0 | 0 | 14 | 1 |
USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water, decaffeinated. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared, decaffeinated. Source checked September 29, 2026.
Does espresso have more caffeine than coffee?
Ounce for ounce, yes. A fluid ounce of espresso has 62.8 mg of caffeine. A full 8 fl oz cup of brewed coffee has 94.8 mg.
USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. Source checked September 29, 2026.
Does black coffee have any calories?
Very few. USDA lists brewed coffee at 1 calorie per 100 g, so an 8 fl oz cup has 2. Decaf brewed coffee is listed at 0.
USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water, decaffeinated. Source checked September 29, 2026.
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USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared. USDA FoodData Central. Beverages, coffee, brewed, prepared with tap water, decaffeinated. USDA FoodData Central. Beverages, coffee, brewed, espresso, restaurant-prepared, decaffeinated. Source checked September 29, 2026.