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?

YOUR PORTION
How much are you having?
Scale the published reference values to your portion.
Per 100 ml (as consumed or prepared). Curated estimate; estimated values.
How this is calculated
total carbohydrate - fiber. Each published value is multiplied by your portion divided by the reference amount. No extra fiber, sugar alcohol or allulose deductions are applied here.
Grams and milliliters are not interchangeable. Household measures require a food-specific conversion; check your scale or product label.
0.6gnet carbs in your portion
- Total carbs
- 0.6g
- Fiber
- 0g
- Protein
- 0g
- Fat
- 0g
- Calories
- 28
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 (100 ml)0.6g
- Protein (100 ml)0g
- Fat (100 ml)0g
- Keto verdictEnjoy in moderation
NUTRITION FACTS
Per 100 ml (as consumed or prepared)
Source: Curated estimate
Source fit: curated estimate; not an exact source match
Net-carb calculation: total carbohydrate - fiber
A USDA reference record exists, but the displayed basis or macros do not directly reproduce it, so KetoLens does not attribute these values to USDA. Check the current label for packaged products.
Nutrition record reviewed 2026-07-09. Maintained by KetoLens Team.
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
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.