Calories in Coffee
Updated July 2026 · Source: USDA FoodData Central
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Nutrition Facts
* % Daily Value based on a 2,000 kcal diet.
Nutritional Content — per 100ml
| Component | Amount | % Daily Value | Bar |
|---|---|---|---|
| Caffeine | 95mg/cup | — | |
| Riboflavin (B2) | 0.18mg | 14% | |
| Potassium | 116mg | 2% | |
| Magnesium | 8mg | 2% | |
| Niacin (B3) | 0.7mg | 4% | |
| Manganese | 0.05mg | 2% | |
| Phosphorus | 7mg | 1% | |
| Sodium | 5mg | 0% | |
| Folate | 5µg | 1% | |
| Vitamin B6 | 0.0mg | 0% |
Calories in Coffee by Volume
| Volume | Calories | Sugar | Carbs |
|---|
Calorie Breakdown — per 100ml
Black coffee: 2 kcal/100ml. Espresso: ~3 kcal/30ml shot. Additions change everything: 1 tbsp cream = +52 kcal; whole milk = +9 kcal/30ml; 1 tsp sugar = +16 kcal. Latte (240ml): ~130 kcal. Frappuccino: 350-500 kcal.
Key Compounds
Coffee Health Benefits
Richest Antioxidant Source in the Western Diet
Coffee is the single largest source of antioxidants in the diet of most people in Western countries — exceeding fruits, vegetables, and tea in terms of antioxidant contribution per day. This is due to both the high antioxidant content (chlorogenic acids, caffeic acid, ferulic acid) and high daily consumption volume. A single cup provides more antioxidants than a typical serving of blueberries. These antioxidants reduce oxidative stress associated with ageing, cardiovascular disease, and neurodegeneration.
Type 2 Diabetes — 25% Lower Risk
A 2014 meta-analysis of 28 prospective studies found that each additional cup of coffee per day was associated with a 6% lower risk of type 2 diabetes. Three cups/day corresponds to ~25% lower risk. The mechanisms include: chlorogenic acids reducing intestinal glucose absorption, improving insulin sensitivity, and reducing hepatic glucose production; caffeine improving fat oxidation; and magnesium improving insulin receptor function.
Parkinson's Disease — 32-60% Risk Reduction
Coffee consumption is one of the most consistently observed environmental protective factors against Parkinson's disease. Multiple large studies find 32-60% lower Parkinson's risk in regular coffee drinkers. Caffeine directly blocks adenosine A2A receptors in the brain, which are involved in Parkinson's pathology. This mechanism is so strong that adenosine A2A receptor antagonists are being developed as potential Parkinson's treatments.
Liver Protection — 40% Lower Cirrhosis Risk
Regular coffee consumption is associated with 40% lower risk of liver cirrhosis and 15% lower risk of liver cancer per 2 cups/day. Coffee increases liver enzyme expression (CYP1A2) that processes and excretes toxins. It also reduces liver fibrosis by lowering transforming growth factor beta (TGF-β) — the primary driver of liver scarring. Even in people with pre-existing liver disease, coffee consumption significantly slows disease progression.
Coffee vs Other Drinks
Is Coffee Suitable for Your Diet?
Related Calculators
Frequently Asked Questions
Sources
Nutrition values from USDA FoodData Central. Not medical advice.