Alcohol calories: beer, wine and spirits by the drink

Alcohol is the calorie source almost nobody logs, for a simple structural reason: in most countries, alcoholic drinks are exempt from nutrition labeling. There's no calorie line on a wine bottle to remind you. But ethanol carries 7 kcal per gram — nearly as dense as fat's 9, and well above the 4 of carbohydrate and protein — and a normal social evening can quietly add 400–800 kcal that appear in no one's food log.

The physics: 7 kcal per gram, plus whatever's dissolved in it

Every drink's calories come from two places: the ethanol itself, and the residual sugar or carbohydrate around it. That's why the sweetness of a drink is a poor guide to its calories — a bone-dry wine is still mostly alcohol calories, and a "light and refreshing" gin and tonic is alcohol plus sugar water. It's also why "low-carb" beer marketing is mostly misdirection: the carbs in regular beer contribute less than half its calories; the alcohol contributes the rest, and the alcohol is still there.

USDA numbers, per 100 ml and per drink

These are the rows calorie.one matches, from USDA FoodData Central:

A few readings from the table. A pint of beer is roughly a glass of wine plus a shot of vodka, calorically. Light beer earns its name honestly — a third fewer calories than regular. And the shot of straight spirits is the cheapest way to consume alcohol, calorie-wise, at ~97 kcal — right up until you mix it: a gin and tonic is ~97 kcal of gin plus ~68 of tonic, and suddenly it's in pint-of-beer territory. Cocktails built on juice, syrup or cream aren't drinks so much as desserts; the piña colada at ~435 kcal outweighs a McDonald's cheeseburger.

Why an evening adds up faster than you think

Three beers at the pub is ~460–645 kcal depending on the pour. Half a bottle of wine over dinner is ~310. Neither is catastrophic — but run either twice a week against a 500 kcal/day target deficit and alcohol alone consumes roughly a quarter of your planned weekly deficit, invisibly if you don't log it. In practice the damage is usually larger, because alcohol also does two behavioral things: it lowers the resistance that was guarding the late-night kebab, and its calories don't trigger satiety — the body doesn't compensate by eating less later, the way it partially does with food.

One honest nuance: metabolizing ethanol is inefficient, so the effectively available energy may be somewhat below the label math of 7 kcal/g. Don't bank on it — logging drinks at face value and being pleasantly surprised beats the reverse.

How to log drinks without ruining your evening

• Count the pours, log once. Nobody logs mid-party. Note "3 beers, 2 G&Ts" in your head and log the lot the next morning — a late honest entry beats a contemporaneous fantasy.
• Wine at home: the bottle is the unit. A 750 ml bottle of table wine is ~620 kcal. Half a bottle is ~310. Easier than estimating glass sizes.
• Watch the mixer, not just the spirit. Swap tonic (34) for soda water (0) and a G&T becomes just the gin.
• Beware "a glass of wine" inflation. Restaurant pours run 175–250 ml; home pours often more. 250 ml is ~207 kcal, not the 125 of the standard glass.

In calorie.one, you log drinks the way you'd say them: "two pints of lager and a whiskey sour" gets decomposed into separate lines, each matched to its USDA row — "Alcoholic beverage, beer, regular, all" at 43 kcal per 100 g, and so on — with the volume as the editable estimate. Same methodology as food: the AI reads what and roughly how much, the database supplies every per-100 g figure, and each line shows its source. Alcohol accuracy, like all calorie accuracy, lives and dies on completeness — the drink you log approximately counts; the drink you skip doesn't. And it's only against your own daily number — the calorie calculator gives you one — that "three beers" turns from an abstract 460 kcal into a quarter of a day.

FAQ

How many calories are in a gram of alcohol?

7 kcal per gram of pure ethanol. That is the physical energy content USDA uses for every alcoholic drink; carbohydrate and protein are 4 kcal per gram, fat is 9.

How many calories are in a pint of beer?

About 215 kcal for a 500 ml pint of regular beer (43 kcal per 100 g), or about 245 for a 568 ml UK pint. A pint of light beer is about 145 kcal.

How many calories are in a shot of vodka or whiskey?

About 97 kcal for a 44 ml (1.5 oz) shot of 80-proof spirits — vodka, gin, rum and whiskey are all the same at 231 kcal per 100 g. The number only moves when you add a mixer.

Beer or wine: which has more calories?

Per drink they are close: a 355 ml can of beer is about 153 kcal and a 150 ml glass of table wine about 125. Per 100 ml, wine is nearly twice as dense (83 vs 43 kcal) because it is stronger. A pint of beer (~215) beats a glass of wine; half a bottle of wine (~310) beats a pint.

Do the calories in alcohol count?

Yes. Ethanol is metabolized for energy, and the calories from a night out land in the same weekly balance as food. The effectively available energy may be slightly below the 7 kcal/g label math, but not by enough to plan around.

Does alcohol have sugar?

Spirits have none — their calories are all ethanol. Dry wine has 1–2 g per glass, regular beer a few grams of residual carbohydrate, and sweet wines, liqueurs and cocktails carry the real sugar: a piña colada is mostly sugar and cream calories, not alcohol.