HEALTH · ALCOHOL CALORIE
Alcohol Calorie Calculator
Calculate calories in alcoholic drinks from ABV%, serving volume, and drink count. See your session total, alcohol grams, and standard US drinks.
A standard US drink = 14 g of pure alcohol (USDA DGA 2020–25). Calories from mixers, syrups, or garnishes are not included.
About This Calculator
Alcoholic drinks add more calories than most people realize — and the calories come entirely from ethanol, not carbohydrates. This calculator computes session calories from any drink's ABV percentage and serving size, with a breakdown of alcohol grams and standard US drink equivalents.
How It Works
Enter a drink's ABV (alcohol by volume percentage), the serving size in millilitres, and how many drinks you had in the session. The calculator applies the WHO/FAO energy factor for ethanol (7 kcal per gram) and the standard ethanol density (0.789 g/mL) to derive calories. Select a drink type shortcut to pre-fill typical ABV and volume, or enter custom values for any drink. Calories from mixers, syrups, and garnishes are not included.
The Formula
Calories = volume (mL) × (ABV / 100) × 0.789 × 7
- volume
- serving size in millilitres
- ABV / 100
- alcohol fraction by volume (e.g. 5% beer = 0.05)
- 0.789
- ethanol density in g/mL (CRC Handbook)
- 7
- kcal per gram of ethanol (WHO/FAO 2000)
Frequently Asked Questions
- Why does beer have fewer calories than wine if wine has higher ABV?
- Calories from alcohol come from ethanol only. A standard 12 oz beer at 5% ABV has about 14 g of ethanol (~98 kcal), while a 5 oz glass of 12% wine also has about 14 g (~98 kcal). They have similar calorie counts per standard serving because the alcohol content is comparable — it's the serving size that changes, not just the ABV.
- Are the calorie counts on beer labels accurate?
- Label calories include both alcohol and any residual fermentable sugars (carbohydrates). This calculator estimates calories from ethanol only, which accounts for roughly 85–90% of total calories in a standard drink. Light beers and dry wines have fewer residual sugars, so this estimate is closer; sweet cocktails or dessert wines may be higher due to sugar content.
- What is a standard US drink?
- A standard US drink contains 14 grams of pure alcohol, which is approximately 12 oz of 5% beer, 5 oz of 12% wine, or 1.5 oz of 40% spirits (USDA Dietary Guidelines 2020–25).