Alcohol Calorie Calculator

How this alcohol calorie calculator works

The calories in a drink come from two places: the alcohol itself, and everything else in the glass, which is mostly carbs from the grain, the grapes or a mixer. The calculator works out each part and adds them up:

• Calories from alcohol = fl oz × 29.5735 × ABV ÷ 100 × 0.789 × 7
• Calories from carbs = fl oz × the drink’s carb rate per fl oz
• Plus any mixer or added-sugar calories you enter

The first line turns fluid ounces into milliliters (29.5735 ml in a US fluid ounce, from NIST Handbook 44), takes the ABV share of that as alcohol, weighs it at 0.789 grams per ml (the density of ethanol, from PubChem) and counts 7 calories per gram (NHS). Put together, each fluid ounce carries about 1.63 calories per point of ABV. As a check, 12 fl oz at 5% holds 14.0 grams of alcohol, which is exactly the 14 grams in NIAAA’s standard drink.

Each drink type sets the carb rate. The rates are chosen so the beer, light beer, red wine and white wine presets come out at USDA FoodData Central’s per-serving totals. They also sit close to the carbs and protein USDA measured in each drink: about 4.9 calories per fl oz for regular beer, 2.3 for light beer and 3.1 for wine.

Spirits come out at 98 here, against USDA’s 97 for a 1.5 oz shot of 80-proof. USDA’s tables use a factor a little under 7 calories per gram of alcohol, so they run about 1% lower. This page keeps 7, the figure the NHS and the World Cancer Research Fund use, so the alcohol in one standard drink is an easy 14 × 7 = 98.

Each drink is rounded to the nearest calorie first. Your week is that figure times your drinks a week, rounded once. The month is the week × 52 ÷ 12 (about 4.33 weeks), and the year is the week × 52. So 10 beers at 153 are 1,530 calories a week, 6,630 a month and 79,560 a year.

The food figures come from USDA FoodData Central: a slice of 14-inch chain cheese pizza is 285 calories, a medium glazed doughnut 253 and a single-patty fast-food cheeseburger 343. A day of food is 2,000 calories, the figure the FDA uses as a general guide on the Nutrition Facts label. It isn’t a personal target.

Calories in beer, wine, spirits and cocktails

Most common drinks have a published figure from USDA or MedlinePlus. Where there isn’t one for a common size, the number comes from this calculator’s formula, and the source column says so.

Cocktails vary the most, because the mixer and the pour change from bar to bar. To count one, pick Mixed drink, set the spirit pour and its ABV, and enter the mixer’s calories. By USDA’s figures, about 6 fl oz of regular cola adds 77, tonic water 62 and orange juice 87, while soda water or a diet mixer adds about 0.

For hard seltzer, cider, sake and the like, pick Other, set the size and ABV, and add the carbs from the label as grams × 4. USDA’s hard seltzer entry is only about 4% alcohol. A 5% can has 98 calories from its alcohol before any carbs.

Alcohol calories vs. carb calories

For most drinks, the alcohol is the bigger part of the total.

So "low-carb" doesn’t mean low-calorie. Most of the calories in wine, and all of them in neat spirits, come from the alcohol.

In this calculator, a 4.2% light beer saves 50 calories against a 5% beer: about 16 from alcohol and 34 from carbs. USDA’s own light beer is about 3.9% ABV, which would put the split nearer 20 and 31, so read this as the calculator’s comparison rather than a USDA figure.

ABV is the biggest lever. Each point of ABV adds about 20 calories to a 12 oz drink and about 8 to a 5 oz glass. A 16 oz craft IPA at 7% comes to 257 calories: 183 from alcohol (71%) and 74 from carbs, with 26.1 grams of alcohol, about 1.9 US standard drinks. Pour size scales everything too, so a 9 oz glass of wine is nearly two 5 oz glasses.

The grams line under the result ties each pour to NIAAA’s standard drink of 14 grams of pure alcohol. A 12 oz beer at 5% is 1.0 standard drink. A 5 oz glass of wine at 13% to 13.5% is about 1.1, not 1, because NIAAA’s standard glass is 12% wine.

What a week of drinks adds up to

Take the example that loads with the page: 10 regular beers a week. At 153 calories each, that’s 1,530 calories a week, about 219 a day, or 11% of a 2,000-calorie day. Over a year it comes to 79,560 calories, about the same as 279 slices of pizza or 40 days of food.

This page doesn’t turn those calories into pounds. The old 3,500-calories-per-pound rule overestimates weight change over time, because the body adjusts (NIDDK), and what you eat or drink in place of alcohol counts too. The yearly total shows how big the habit is. It won’t predict your weight.

Calories are only one way to look at those drinks. The alcohol spending calculator puts a price on them, and the alcohol taper schedule calculator lays out a day-by-day step-down if you want to cut back gradually. Slips happen, and one drink doesn’t wipe out the days before it. Here’s what to do with your sober date after a relapse.

If you drink heavily every day, talk to a doctor before you stop or cut down a lot, because alcohol withdrawal can be serious. Free, confidential help is available 24/7 from SAMHSA’s National Helpline at 1-800-662-4357.

If you want to keep track once you cut back or stop, the drink profile in Sober44 has a calories-per-drink field, so the per-drink number from this page can go straight in. After your quit date, the app estimates the calories, drinks and money you’ve avoided from that profile. These are estimates from your profile, not a log of what you drank. There’s no account, and the data stays on your phone.