How Many Carbs Are in Gin?

Plain gin contains zero grams of carbohydrates. A standard 1.5-ounce (44 ml) shot of 80-proof gin has roughly 97 calories, and every one of those calories comes from ethanol itself, not from sugar, starch, or any other carbohydrate. That makes gin one of the lowest-carb alcoholic options available, but the story gets more interesting once you consider what people actually mix gin with, how flavored gins differ, and what alcohol does to your blood sugar even when carbs are absent.

Why Gin Has No Carbs

Gin starts as a neutral grain spirit, essentially the same base as vodka. During distillation, a fermented mash of grains (or sometimes grapes or other sugars) is heated until the ethanol vaporizes, leaving water, sugars, and most other non-volatile compounds behind. The vapor is collected and condensed back into liquid. By the time this process is finished, the resulting spirit is almost entirely ethanol and water. The botanical flavors that define gin, primarily juniper berries along with various herbs and spices, are introduced either by steeping them in the spirit or by passing the alcohol vapor through them. These botanicals contribute trace amounts of volatile flavor compounds but virtually no measurable carbohydrate.

Analytical methods used to measure residual sugars in distilled spirits confirm that properly distilled products contain negligible sugar content.

Calories Without Carbs

People asking about gin’s carb count are usually watching their overall intake, so the calorie picture matters. Ethanol delivers about 7 calories per gram, which sits between the 4 calories per gram you get from carbohydrates or protein and the 9 calories per gram from fat. A 1.5-ounce pour of 80-proof gin (40% alcohol by volume) contains roughly 14 grams of pure ethanol, giving you around 97 calories. Bump that up to a Navy-strength gin at 57% ABV and the same pour climbs to about 130 calories.

Your body processes ethanol differently from food calories. The liver prioritizes metabolizing alcohol above almost everything else, which temporarily shifts how your body handles fats and sugars. So while gin delivers no carbs, it isn’t metabolically “free” in the way that zero-carb, zero-calorie beverages are. The liver is working hard even though the carb column reads zero.

How Gin Stacks Up Against Other Drinks

Gin’s zero-carb status is shared by most unflavored distilled spirits. Vodka, whiskey, rum, tequila, and brandy all go through distillation and end up in the same neighborhood: zero grams of carbohydrates per standard serving, with calories coming exclusively from alcohol. Where things diverge is when you move to drinks that aren’t fully distilled or that have sugar added after distillation.

Beer: A typical 12-ounce lager contains 10 to 15 grams of carbs, mostly from residual grain sugars and dextrins that survive the brewing process. Light beers trim that to roughly 3 to 6 grams.
Wine: A 5-ounce glass of dry red or white wine runs 3 to 4 grams of carbs from residual grape sugar. Sweet wines and dessert wines can hit 8 grams or more.
Liqueurs: Spirits like triple sec, amaretto, or Irish cream have sugar added after distillation. A single ounce can contain 10 grams or more of carbohydrates.
Hard seltzers: Most brands land around 1 to 2 grams of carbs per can, though some are truly zero-carb.

Gin’s advantage is clear if you drink it neat, on the rocks, or with a zero-calorie mixer. The trouble is that almost nobody orders “just gin.”

The Mixer Problem

The carbs that people attribute to gin almost always come from whatever it’s paired with. A gin and tonic made with standard tonic water adds roughly 22 to 32 grams of sugar per serving, depending on how generously you pour. That’s comparable to a small soft drink. Regular tonic water is sweetened with high-fructose corn syrup or cane sugar, and because it doesn’t taste particularly sweet (the quinine bitterness masks it), people tend to underestimate how much sugar they’re consuming.

Here’s a rough guide to common gin mixers and what they add per typical serving:

Regular tonic water (6 oz): 22 to 24 grams of carbs
Orange juice (4 oz): about 13 grams of carbs
Cranberry juice cocktail (4 oz): about 15 grams of carbs
Simple syrup (0.5 oz): roughly 6 grams of carbs
Diet or slimline tonic (6 oz): 0 grams of carbs
Club soda or seltzer: 0 grams of carbs
Fresh lime or lemon squeeze: under 1 gram of carbs

A classic martini (gin and dry vermouth) is relatively lean at 1 to 2 grams of carbs per drink, since dry vermouth has only a small amount of residual sugar. A gimlet made with Rose’s lime juice, however, can add 16 grams or more from the sweetened cordial. A Tom Collins with house-made sugar syrup can land anywhere from 15 to 25 grams depending on the bartender’s hand. If you’re watching carbs, the gin is never the problem. The mixer is.

Research in animal models has shown that combining ethanol with fructose, a common sugar in mixers and syrups, produces worse metabolic outcomes than either substance alone, including elevated blood glucose and increased insulin resistance.

Flavored Gins and Sweetened Variations

The growing market for flavored gins has created a genuine exception to the “gin has zero carbs” rule. Traditional London Dry gin and Plymouth gin are unsweetened, and their botanical character comes from distillation rather than added sugar. But flavored gins, particularly the fruit-infused varieties that have become popular in recent years (think pink gin, rhubarb gin, or sloe gin), sometimes contain added sugar.

Sloe gin is the most notable example. It’s technically a gin liqueur, made by steeping sloe berries in gin with a large amount of sugar. A 1.5-ounce pour of sloe gin can contain anywhere from 8 to 15 grams of carbohydrates. The alcohol content is also lower, usually around 25 to 30% ABV compared to standard gin’s 37.5 to 47%. If you’re counting carbs and someone offers you sloe gin, treat it as a liqueur, not a spirit.

Many of the newer flavored gins sit somewhere in between. Some brands add sugar to smooth out the flavor profile; others use only natural botanical infusions with no added sweetener. The label won’t always tell you, because spirits in many countries aren’t required to carry nutrition labels. In the EU, an updated regulation has pushed for ingredient and calorie labeling on alcoholic beverages, but compliance is still inconsistent. In the U.S., the TTB (Alcohol and Tobacco Tax and Trade Bureau) regulates spirits labels, and while calorie and carb information is not mandatory, some brands voluntarily provide it. When in doubt, contact the manufacturer or check their website.

What Alcohol Does to Blood Sugar

Here’s where things get counterintuitive. Gin has no carbs, so you might assume it has no effect on blood sugar. In reality, alcohol has a significant and somewhat unpredictable impact on glucose regulation, and that matters whether or not you have diabetes.

After you drink, your liver shifts its attention to breaking down ethanol and temporarily dials back its normal job of producing glucose (a process called gluconeogenesis). In one study of overnight-fasted men, gluconeogenesis dropped by about 45% in the five hours following alcohol ingestion compared to a placebo, with a roughly 61% decrease in the availability of the precursors the liver uses to make glucose.

For most healthy people eating regular meals, this dip in liver glucose production doesn’t cause problems because you have enough circulating blood sugar and glycogen stores to compensate. But if you’re fasting, skipping meals, or exercising heavily alongside drinking, the effect can lead to low blood sugar. That’s one reason people sometimes feel shaky, irritable, or unusually hungry after a night of drinking, even if they didn’t consume any carbohydrates.

For people with diabetes, the picture is more serious. A systematic review found that ethanol consumption, whether ingested or administered intravenously, was associated with an increased risk of hypoglycemia due to decreased plasma glucose, impaired counter-regulatory hormone responses, reduced awareness of low blood sugar, and diminished cognitive function.

This is a genuine safety concern, not a theoretical one. If you’re managing diabetes with insulin or sulfonylureas, drinking gin (even with zero carbs) can cause your blood sugar to drop dangerously low, especially overnight when you’re sleeping and unable to notice symptoms. The standard advice is to eat food containing carbohydrates when you drink, which somewhat defeats the purpose if you chose gin specifically to avoid carbs. The zero-carb nature of gin doesn’t make it metabolically neutral for anyone relying on tight glucose control.

Gin on a Keto or Low-Carb Diet

Gin is one of the most frequently recommended spirits for people following ketogenic or other low-carb diets, and on the surface, the logic is sound: zero carbs means zero impact on your daily carb budget. Many keto guides list plain gin with soda water and lime as a “safe” drink.

But there’s a catch that often goes unmentioned in diet forums. While gin won’t contribute carbs, alcohol itself pauses fat burning. Your body treats ethanol as a toxin and prioritizes clearing it. While your liver is processing alcohol, it largely stops oxidizing fatty acids. This doesn’t mean you gain fat from the gin itself, but it does mean that any food you eat around the same time is more likely to be stored rather than burned. For someone in ketosis, alcohol can also temporarily suppress ketone production, since the liver’s metabolic resources are redirected.

None of this makes gin incompatible with a low-carb diet. It just means that “zero carbs” and “no metabolic impact” are very different claims. People on strict keto sometimes find their weight loss stalls when they add regular alcohol consumption, even when their total carb count stays within range. The carbs aren’t the bottleneck; the liver’s shifted priorities are.

If you’re doing low-carb specifically for blood sugar control rather than weight loss, the hypoglycemia risk described above also applies. Pairing gin with a zero-carb mixer while eating a low-carb meal can create a scenario where your blood sugar drops more than expected, particularly if you’re on medication.

Does Aging or Barrel Contact Add Carbs?

Some craft distillers have started barrel-aging their gins, storing the finished spirit in oak barrels for weeks or months. This imparts color, vanilla notes, and a rounder flavor, but it doesn’t add meaningful carbohydrates. The trace compounds extracted from wood, mainly tannins, vanillin, and related phenolics, are present in parts per million and don’t register as carbohydrate in any nutritional sense.

What can add carbs is the occasional practice of adding a small amount of sugar after distillation to soften a spirit’s harshness. This is more common in some styles of rum or cognac than in gin, but it’s not unheard of. The EU’s definition of “London Dry Gin” explicitly prohibits the addition of sweetening agents after distillation beyond a tiny allowance (0.1 grams of sugar per liter), which is nutritionally insignificant. Other gin categories, such as “distilled gin” or “compound gin,” have slightly more permissive rules, and gins produced outside the EU may not follow any of these definitions. If a gin is labeled “London Dry,” you can be confident its carb content is effectively zero.

Why Spirits Labels Don’t Show Nutrition Facts

One reason the carb question comes up so often is that most bottles of gin don’t have a nutrition panel. In the United States, alcoholic beverages containing 7% ABV or more are regulated by the TTB rather than the FDA, and the TTB does not require a Nutrition Facts label. Some producers voluntarily include one, and the industry has moved slowly toward greater transparency, but it’s still the exception rather than the norm. In the EU, similar exemptions have historically applied, though recent legislation is pushing for mandatory energy and ingredient declarations on alcoholic drinks.

This labeling gap leaves consumers relying on external databases or rough calculations. The USDA’s FoodData Central database lists gin as containing 0 grams of carbohydrate per standard serving, and that figure is the basis for nearly every nutrition website’s gin entry. For standard, unflavored, unsweetened gin, that number is reliable. For flavored or sweetened varieties, it may not apply, and the absence of a label makes it harder to check.

If you want to estimate calories from any unflavored spirit, the math is straightforward: multiply the number of fluid ounces by the proof, then multiply by 0.8. A 1.5-ounce pour of 80-proof gin gives you 1.5 × 80 × 0.8 = 96 calories, all from alcohol, none from carbs. That shortcut works for any standard distilled spirit.

Tonic Water’s Hidden Sugar Load

Tonic water deserves its own mention because it is, by a wide margin, the mixer most responsible for turning a zero-carb drink into a surprisingly sugary one. Many people assume tonic water is essentially the same as sparkling water with some quinine for bitterness. In fact, most commercial tonic waters contain as much sugar per ounce as cola. A standard 8-ounce serving of Schweppes tonic water, for instance, contains around 22 grams of sugar. Pour that over gin and you’ve created a drink with more sugar than a small chocolate bar.

The diet and “slimline” tonic waters that have become widely available solve this problem, using artificial sweeteners or stevia in place of sugar while maintaining the quinine bitterness. Taste-wise, the gap between regular and diet tonic has narrowed considerably in recent years, especially among premium brands like Fever-Tree Light or Q Mixers Light. If you like gin and tonics but want to keep the carbs at zero, switching to a diet tonic is the single most impactful change you can make. The gin was never the issue.