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How alcohol calories fit into your deficit

How alcohol calories fit into your deficit

Alcohol gives 7 kcal per gram, almost as much as fat, and it makes you eat more food too. Learn how to fit your weekly drinks into the Burnie deficit maths without giving them up.

1 Aug 2026 · Burnie Academy
alcohol calorie-deficit weekly-maths drinks

You are at a friend's party. The music is on. Someone hands you a cold beer. Then another. It feels small, just two drinks. But those two glasses carry calories, just like a plate of food. This short read shows how drinks fit inside your daily deficit.

A drink is mostly water, so it barely has any calories.

mostly false

mostly false

The water in your glass is not the problem. The alcohol is. Alcohol gives your body 7 kcal per gram. That is almost as much as fat, which gives 9 kcal per gram. Sugar and protein give only 4. So drop for drop, the alcohol itself is heavy. One standard drink holds about 14 grams of pure alcohol. That is about 98 kcal before you add any mixer, sugar, or snack. CDC also says alcoholic drinks give calories but few nutrients. So those are empty calories, like fizzy soda.

What one standard drink really costs

A standard drink is one small bottle of beer at 5% alcohol. Or one small glass of wine at 12%. Or one shot of spirits at 40%. Each holds the same amount of pure alcohol, about 14 grams. In calories, CDC says one beer is about 150 kcal. One glass of wine is about 120 kcal. One shot of liquor is about 100 kcal. For comparison, CDC notes one beer holds about the same calories as a 12-ounce can of sugary soda. That is food energy, not just thirst.

One drink a night, all week long

Beer: 1 bottle a night
150 kcal each x 7 days = 1,050 kcal a week. That is like a whole extra day of food for some people.
Wine: 1 glass a night
120 kcal each x 7 days = 840 kcal a week. Mixers or sweet wine push this higher.
Whisky shot: 1 a night (neat)
100 kcal each x 7 days = 700 kcal a week. Add cola or juice and this number climbs fast.

A drink only adds its own calories. It does not change what else you eat.

mostly false

mostly false

Alcohol loosens your brakes. Scientists call it the aperitif effect. One study gave people alcohol, then watched them eat. The group ate about 7% more food after the drink. So the chips, the peanuts, the late-night biryani, they all add up on top of the drink. The real cost of a drink is the drink plus the snacks it invites. That is the hidden bill most people forget to log.

The bottom line

Drinks are not magic. They are food energy you can count. One beer a night adds up to about 1,050 kcal in a week, close to a whole extra day of eating. And because alcohol makes you eat about 7% more food, the snacks pile on top. Log every drink in Burnie like you log a roti. See the weekly number. Then decide. Your deficit is still just maths, and maths is fair to everyone.

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