Hard seltzer is moderate on keto: at ~0.6g net carbs per 100ml (about 2g per 12 oz can) the carbs are trivial, but the alcohol itself can stall ketosis and pause fat burning. Crisp, carbonated, and lower-carb than beer—keep it occasional and unsweetened.
Is Hard Seltzer Keto?
Alcoholic Beverages

KETO VERDICTMODERATE
Hard seltzer is moderate on keto: at ~0.6g net carbs per 100ml (about 2g per 12 oz can) the carbs are trivial, but the alcohol itself can stall ketosis and pause fat burning. Crisp, carbonated, and lower-carb than beer—keep it occasional and unsweetened.
- Net carbs (100g)0.6g
- Protein (100g)0g
- Fat (100g)0g
- Keto verdictEnjoy in moderation
NUTRITION FACTS
Per 100g (raw)
Net Carbs
0.6g
Total Carbs
0.6g
Fiber
0g
Protein
0g
Fat
0g
Calories
28
Source: USDA FoodData Central
HOW TO ENJOY IT ON KETO
- Very low net carbs per serving (~0.6g per 100ml, about 2g per 12 oz can)
- Lower-carb alternative to beer and many canned cocktails
- Easy to keep keto by choosing unsweetened or “no added sugar” flavors
- Simple to track: cans are labeled with carbs per serving
- Pairs well with citrus and zero-carb mixers to stretch volume without carbs
HEALTH BENEFITS
- Lower carbohydrate load than beer helps stay within daily macros
- Clear labeling supports mindful intake and adherence
- Carbonation and flavor variety can reduce temptation for sugary drinks
PREPARATION SUGGESTIONS
STRAIGHT FROM CAN
Chill well and enjoy a 12 oz can; pick unsweetened flavors for near-zero carbs.
CITRUS & ICE
Pour over ice with a squeeze of lime or lemon for a brighter, longer sip.
SPRITZ STRETCH
Top with sparkling-water or club-soda to extend without adding carbs.
KETO “RANCH WATER” REMIX
Add a small splash of tequila or vodka and fresh lime; sip slowly and hydrate.