How many carbs are in a hard seltzer?

Most mainstream hard seltzers have 1-2g of carbs per 12 oz can and 90-100 calories. A few are even lower: Michelob Ultra Organic Seltzer and Corona Hard Seltzer come in around 0g carbs. High Noon, made with real vodka and juice, is slightly higher at about 2.6g per can. That makes hard seltzer one of the most low-carb and keto-friendly alcoholic drinks available.

What is the lowest-carb hard seltzer?

Michelob Ultra Organic Seltzer (0g carbs, 80 calories) and Corona Hard Seltzer (0g carbs, 90 calories) are the lowest. Vizzy and Smirnoff Seltzer follow at about 1g of carbs per can. Most others — White Claw, Truly, Bud Light Seltzer, Topo Chico — sit at roughly 2g per 12 oz.

Is hard seltzer keto-friendly?

Yes. With only 1-2g of carbs per can, hard seltzer fits easily within a typical keto budget of 20-50g net carbs per day. It's one of the best alcohol choices on keto. Keep in mind that alcohol itself pauses fat-burning while your body metabolizes it, so it can still slow ketosis even when the carb count is near zero.

Are White Claw and Truly low carb?

Both are low carb. White Claw has about 2g of carbs and 100 calories per 12 oz can, and Truly has roughly 1-2g of carbs and 100 calories. Both fit a low-carb or keto diet in moderation. Watch the flavored or 'lemonade' and 'iced tea' line extensions, which sometimes carry a few extra grams of sugar.

How many carbs are in a High Noon?

A 12 oz High Noon Sun Sips can has about 2.6g of carbs and 100 calories. Because High Noon is made with real vodka and real fruit juice rather than fermented sugar, its carbs come from the juice. It's still low enough to fit keto and low-carb diets in moderation.

Does hard seltzer break ketosis?

The carbs in hard seltzer (1-2g) won't break ketosis on their own. However, your liver prioritizes metabolizing alcohol over burning fat, so any alcoholic drink temporarily pauses fat-burning. You likely stay in ketosis, but fat loss can slow while the alcohol is processed. Drink in moderation and hydrate.

Low-Carb Hard Seltzer: 12 Best Options Ranked by Carbs

Hard seltzer carbs compared. White Claw, Truly, High Noon, Michelob Ultra and more ranked by carbs and calories per 12 oz can, with keto picks.

Hard seltzer became the default low-carb drink for a reason: most cans carry just 1-2g of carbs and around 100 calories, far less than beer, wine, or any mixed drink with juice or soda. But the numbers aren't identical across brands, and a few "seltzers" sneak in extra sugar. Here's how the most popular options stack up, ranked by carbs per 12 oz can.

The lowest-carb hard seltzers are Michelob Ultra Organic Seltzer (~0g carbs, 80 cal) and Corona Hard Seltzer (~0g carbs, 90 cal), followed by Vizzy and Smirnoff Seltzer (~1g). The popular mainstream cans — White Claw, Truly, Bud Light Seltzer, and Topo Chico — all sit at roughly 2g of carbs and 100 calories. High Noon, made with real vodka and juice, is slightly higher at about 2.6g per can. All of them fit a keto or low-carb diet in moderation, but remember that the alcohol itself pauses fat-burning regardless of the carb count.

Hard seltzers ranked by carbs (per 12 oz can)

Hard seltzer	Carbs (per 12 oz)	Calories	Keto-friendly?
Michelob Ultra Organic Seltzer	~0g	80	Yes
Corona Hard Seltzer	~0g	90	Yes
Vizzy Hard Seltzer	~1g	100	Yes
Smirnoff Seltzer	~1g	90	Yes
Truly Hard Seltzer	~1-2g	100	Yes
White Claw	~2g	100	Yes
Bud Light Seltzer	~2g	100	Yes
Topo Chico Hard Seltzer	~2g	100	Yes
Bon & Viv Spiked Seltzer	~2g	90	Yes
High Noon Sun Sips	~2.6g	100	Yes
Mike's Hard Seltzer	~3g	100	Mostly
Truly Lemonade / Iced Tea	~4-5g	100-110	Limited

Figures are for the standard 12 oz (355 ml) can in the brand's core flavors. Fruity line extensions, "lemonade," "iced tea," and "margarita"-style cans often add a few grams of sugar, so always check the specific can.

Why hard seltzer is so low in carbs

Hard seltzer is essentially carbonated water, alcohol, and flavoring. Unlike beer — which is brewed from grain and retains residual malt carbohydrates — most seltzers are fermented from cane sugar that's almost fully converted to alcohol, leaving little behind. The result is a drink with the alcohol of a light beer but a fraction of the carbs.

The one nuance is how the alcohol gets there. Brands like High Noon skip fermentation entirely and blend real vodka with fruit juice. That tastes cleaner to many people, but the juice adds a small amount of natural sugar — which is why High Noon lands a touch higher than a fermented-sugar seltzer like White Claw.

Hard seltzer vs. other drinks on keto

Hard seltzer: ~1-2g carbs per can — among the best choices.
Light beer: ~3-7g per 12 oz. See our low-carb beer ranking for the lowest options.
Dry wine: ~3-4g per 5 oz glass.
Spirits (vodka, gin, whiskey) neat or with soda: ~0g carbs — the lowest of all, as long as you skip sugary mixers.
Regular cocktails, margaritas, and sodas: 15-40g+ carbs — save these for higher-carb days.

For a full breakdown of what to pour, see our guide to keto drinks.

The catch: alcohol still slows fat-burning

A near-zero-carb can is great, but alcohol isn't free on keto. Your liver treats ethanol as a toxin and prioritizes clearing it over burning fat, so fat loss pauses while the alcohol is processed — even with a 0g seltzer. You also tend to feel intoxication faster on a low-carb diet. The practical takeaway: hard seltzer is the smartest drink for staying in ketosis, but moderation still matters. Hydrate, and don't count the alcohol calories as "free."

Track every can in one tap

Logging a drink shouldn't take longer than pouring it. Snap a photo or search the name, and CarbMeNot pulls the carbs, calories, and net carbs automatically — then counts them against your daily budget so a seltzer or two never blows your day.