The amount of alcohol in a drink depends entirely on what you’re drinking. A light beer, a glass of wine, and a shot of vodka all contain roughly the same amount of pure alcohol (about 14 grams, or 0.6 fluid ounces), but that’s only true when they’re poured at standard sizes. In practice, most drinks don’t come in standard sizes, and alcohol content varies dramatically even within categories like beer or wine.
What Counts as One Standard Drink
In the United States, one standard drink contains about 14 grams of pure alcohol. That translates to 12 ounces of regular beer at 5% ABV, 5 ounces of wine at 12% ABV, or 1.5 ounces of distilled spirits at 40% ABV. These three servings are meant to be roughly equivalent, but the key word is “meant to.” The standard drink is a reference point, not a reflection of how drinks are actually served. A pint glass holds 16 ounces, not 12. A generous wine pour can easily hit 7 or 8 ounces. And many beers and wines sit well above the ABV percentages those standard calculations assume.
Beer: 3% to Over 10% ABV
Light beers typically fall between 3.5% and 4.2% ABV. A standard American lager like Budweiser or Coors sits around 5%. From there, things climb quickly. Session IPAs stay under 5%, but a classic West Coast or American IPA runs 6% to 7.5% ABV. Double IPAs push past 8%, and some imperial stouts and barleywines reach 10% to 13%.
That range matters more than most people realize. A 16-ounce pint of a 7.5% IPA contains roughly twice the alcohol of a 12-ounce light beer at 4%. If you’re tracking how much you’re actually consuming, the style of beer changes the math dramatically.
Wine: 5.5% to 23% ABV
Wine has a wider alcohol range than most people expect. Light, sweet styles like Moscato d’Asti can be as low as 5.5% ABV. German Rieslings in the Kabinett and Spätlese styles hover around 8% to 8.5%. The average table wine, both red and white, falls in the 11.5% to 13.5% range.
Warmer growing regions produce riper grapes with more sugar, which ferments into more alcohol. That’s why a California Zinfandel can reach 16% ABV while a French Muscadet sits at 9.5%. Australian Shiraz often hits 15.5%. These aren’t exotic outliers; they’re bottles you’d find on any grocery store shelf.
Fortified wines are in a different category entirely. Port, Madeira, and Marsala all come in around 20% ABV. Sherry ranges from 15% to 20%. Vermouth sits at about 20%. A 5-ounce glass of port contains nearly twice the alcohol of the same pour of a standard red wine.
One detail worth knowing: wine labels are allowed a tolerance of plus or minus 1.5 percentage points for wines at or below 14% ABV, and plus or minus 1 percentage point for wines above 14%. A bottle labeled 13% could legally contain anywhere from 11.5% to 14.5% alcohol.
Spirits: 40% ABV and Up
Vodka, gin, rum, tequila, and whiskey are all typically bottled at 40% ABV, which equals 80 proof. The proof number is simply double the ABV percentage, so 90 proof means 45% ABV. Some whiskeys and rums are bottled at “cask strength” or “barrel proof,” which can range from 50% to 65% ABV or higher. Navy-strength gin is traditionally 57% ABV.
A standard 1.5-ounce shot of 40% spirits contains one standard drink. But most cocktails contain more than one shot, which is where people lose track.
Cocktails: Often More Than You Think
Mixed drinks are where alcohol math gets tricky, because a single glass can contain multiple standard drinks. A martini equals about 2 standard drinks. A margarita comes in at roughly 1.5. A Long Island Iced Tea packs about 4 standard drinks into one glass, and an Adios contains around 5.
That means two Long Island Iced Teas over dinner contain roughly the same alcohol as an eight-pack of regular beer. The mixers dilute the taste of alcohol, but they don’t reduce the amount of it.
Liqueurs and Cordials
Liqueurs occupy a middle ground between wine and full-strength spirits. Most fall between 15% and 40% ABV, with the sweeter, cream-based varieties on the lower end and drier herbal liqueurs on the higher end. Triple sec and amaretto typically sit around 20% to 28%. Chartreuse and some amaro varieties can reach 40% to 55%.
Because liqueurs taste sweet, it’s easy to underestimate them. A heavy pour of a 30% ABV liqueur over ice delivers more alcohol than a glass of wine.
Surprising Sources of Alcohol
Several products you wouldn’t think of as “drinks” contain significant alcohol. Vanilla extract is required by the FDA to contain at least 35% alcohol, putting it on par with many spirits. Cocktail bitters like Angostura are typically around 45% ABV. They’re used in tiny amounts (a few dashes), so the actual alcohol per serving is minimal, but the concentration itself is higher than most liquors.
Kombucha is fermented tea, and most commercial brands contain less than 0.5% ABV, which is the legal threshold for being labeled “non-alcoholic.” Some craft kombucha brands ferment to higher levels and are sold as alcoholic beverages, typically in the 4% to 8% range.
Non-Alcoholic Drinks Aren’t Always Zero
Under federal rules, a beverage labeled “non-alcoholic” can contain up to 0.5% ABV. Only products labeled “alcohol-free” are required to contain 0.0% ABV, with no tolerance allowed. For most people, the trace alcohol in a non-alcoholic beer is physiologically insignificant. But for anyone avoiding alcohol entirely, the distinction between “non-alcoholic” and “alcohol-free” on the label is a real one.
How to Estimate What You’re Actually Drinking
The simplest way to estimate alcohol in any drink is to multiply the volume (in ounces) by the ABV percentage, then divide by 0.6. The result tells you roughly how many standard drinks you’re consuming. A 16-ounce pint of 7% IPA: 16 × 0.07 = 1.12 ounces of pure alcohol, divided by 0.6 = about 1.9 standard drinks. A 6-ounce pour of 14% red wine: 6 × 0.14 = 0.84, divided by 0.6 = 1.4 standard drinks.
This quick calculation works for any beverage where you know the ABV and the pour size. It’s especially useful for craft beers, generous wine pours, and cocktails, where the gap between “one drink” and “one standard drink” is often larger than you’d guess.