Pineapple juice is not keto-compatible: ~12.8g net carbs per 100ml. An 8 oz (240ml) glass delivers ~30–32g net carbs—mostly fast-absorbing sugar with virtually no fiber. Avoid on keto except in very rare, minimal tastes.
Is Pineapple Juice Keto?
Juices

KETO VERDICTLIMIT
Pineapple juice is not keto-compatible: ~12.8g net carbs per 100ml. An 8 oz (240ml) glass delivers ~30–32g net carbs—mostly fast-absorbing sugar with virtually no fiber. Avoid on keto except in very rare, minimal tastes.
- Net carbs (100g)12.8g
- Protein (100g)0.5g
- Fat (100g)0.1g
- Keto verdictLimit portions
NUTRITION FACTS
Per 100g (raw)
Net Carbs
12.8g
Total Carbs
13g
Fiber
0.2g
Protein
0.5g
Fat
0.1g
Calories
57
Source: USDA FoodData Central
WHY TO LIMIT IT ON KETO
- Very high sugar: ~12.8g net carbs per 100ml—nearly pure fruit sugar
- Not keto-compatible: liquid carbs rapidly impact blood glucose/ketones
- Single-glass problem: 8 oz delivers ~30–32g net carbs (over many daily limits)
- Juicing concentrates sugars while stripping fiber and bulk
- Minimal satiety: low fat and fiber increase overconsumption risk
- Better choices exist: use low-/no-carb flavorings instead of juice
HEALTH BENEFITS
- Bromelain enzyme may aid protein digestion and has anti-inflammatory activity
- Provides vitamin C to support immune function
- Contains manganese and other antioxidants
- Traditionally used to support digestion
- Potential anti-inflammatory effects from bromelain
- Vitamin C contributes to collagen formation and antioxidant defense
PREPARATION SUGGESTIONS
AVOID JUICE FORM
Skip pineapple juice on keto—fiber is removed and sugars are concentrated.
FRESH PINEAPPLE ALTERNATIVE
If you must, use tiny amounts of fresh pineapple (~12g net carbs per 100g) instead of juice.
PINEAPPLE FLAVOR HACK
Use sugar-free pineapple flavoring/extract in sparkling-water with a touch of allulose.
NON-KETO COOKING
Reserve pineapple juice for non-keto marinades, glazes, or desserts.