Truly Hard Seltzer is keto friendly. A standard 12-ounce can contains just 2 grams of net carbs and 100 calories, making it one of the lower-carb alcoholic options available. Most people following a ketogenic diet can fit one or two cans into their daily carb budget without issue.
Truly’s Carb and Sugar Breakdown
The standard Truly lineup keeps its nutritional profile lean: 2 grams of total carbs, 2 grams of net carbs (meaning no fiber to subtract), 1 gram of sugar, zero fat, zero protein, and 100 calories per 12-ounce can. For context, most keto dieters aim to stay under 20 to 50 grams of net carbs per day, so a single Truly barely makes a dent.
The alcohol in Truly is made from cane sugar, but that doesn’t mean the sugar ends up in your glass. During fermentation, yeast converts most of the sugar into alcohol and carbon dioxide. What remains is that 1 gram of residual sugar per can. Truly also uses stevia, a zero-calorie plant-based sweetener, to round out the flavor without adding carbs. Some varieties include small amounts of fruit juice from concentrate (blueberry, blackberry, raspberry), but the quantities are minimal enough to keep carbs at 2 grams.
How Alcohol Affects Ketosis
The carb count tells only part of the story. Alcohol itself changes how your body processes fuel, and this matters more than most keto guides let on. Your liver treats alcohol as a priority toxin, meaning it stops burning fat to metabolize the alcohol first. You won’t necessarily get kicked out of ketosis from a couple of drinks, but fat burning pauses until the alcohol clears your system.
This is why drinking on keto can slow weight loss even when you’re staying within your carb limit. The 100 calories in a can of Truly come almost entirely from alcohol (at 5% ABV), and those calories get processed before your body returns to burning stored fat. It’s not a dealbreaker for most people, but it’s worth knowing if you’re drinking regularly and wondering why the scale isn’t moving.
One more thing to watch: many people on keto report feeling the effects of alcohol faster and stronger. With lower glycogen stores and less water retention, your tolerance can drop noticeably. A two-drink evening might hit like three or four used to.
Truly Extra and Higher-ABV Versions
Truly’s core line sits at 5% ABV, but the brand also sells Truly Unruly Punch at 8% ABV. Higher alcohol content typically means more calories, since alcohol itself carries about 7 calories per gram. If you’re tracking closely, check the label on any variety outside the standard lineup. The carb count may also shift slightly between flavors and product lines, though most stay in the 1 to 4 gram range.
How Truly Compares to Other Drinks
At 2 grams of net carbs, Truly lands in the same territory as other popular hard seltzers like White Claw and High Noon. Here’s how it stacks up against other common choices:
- Regular beer: 10 to 15 grams of carbs per 12 ounces. Not keto friendly for most people.
- Light beer: 3 to 6 grams of carbs. Workable but higher than hard seltzer.
- Dry wine (5 oz): 3 to 4 grams of carbs. A reasonable option, though easy to over-pour.
- Straight spirits (vodka, tequila, whiskey): 0 grams of carbs. The lowest-carb option, as long as you skip sugary mixers.
- Cocktails and mixed drinks: 15 to 40+ grams of carbs depending on the recipe. Margaritas, daiquiris, and anything with juice or simple syrup will blow through your carb budget fast.
Truly sits comfortably near the bottom of the carb scale. The only way to go lower is straight liquor with a zero-carb mixer like soda water or a squeeze of lime.
Tips for Drinking Truly on Keto
Staying in ketosis while enjoying Truly comes down to a few practical habits. First, count it in your daily carb total rather than treating it as “free.” Two or three cans add 4 to 6 grams of carbs, which is still manageable but worth tracking if you’re eating close to your limit.
Hydration matters more than usual. Alcohol is a diuretic, and keto already reduces water retention, so the combination can leave you dehydrated quickly. Alternating a glass of water between drinks helps more on keto than it does on a standard diet. Electrolytes (sodium, potassium, magnesium) are also worth paying attention to, since both keto and alcohol deplete them.
Eating before you drink is smart on any diet, but especially on keto where alcohol tolerance tends to be lower. A meal with fat and protein slows alcohol absorption and helps you avoid the surprisingly strong buzz that catches many keto dieters off guard. Truly is also naturally gluten free, with its alcohol base derived from cane sugar rather than grains, so it works for people avoiding gluten alongside carbs.