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Net Carbs Formula:
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Net carbs calculation is a method used primarily in ketogenic diets to determine the amount of carbohydrates that actually impact blood sugar levels. It subtracts fiber and sugar alcohols from total carbohydrates since these components are not fully digested and absorbed by the body.
The calculator uses the standard keto net carbs formula:
Where:
Explanation: Fiber is subtracted completely as it's indigestible, while sugar alcohols are divided by 2 since they're partially absorbed and have varying effects on blood sugar.
Details: Tracking net carbs is crucial for maintaining ketosis, a metabolic state where the body burns fat for fuel instead of carbohydrates. Most keto diets recommend staying under 20-50 grams of net carbs daily.
Tips: Enter total carbohydrates, fiber, and sugar alcohols in grams. All values must be non-negative. The calculator will automatically compute your net carbs for keto diet tracking.
Q1: Why subtract fiber from total carbs?
A: Fiber is a type of carbohydrate that humans cannot digest, so it doesn't raise blood sugar levels or interfere with ketosis.
Q2: Why divide sugar alcohols by 2?
A: Sugar alcohols are partially absorbed and have varying glycemic impacts. Dividing by 2 accounts for their partial effect on blood sugar.
Q3: What are common sugar alcohols?
A: Erythritol, xylitol, sorbitol, maltitol, and mannitol are common sugar alcohols used in low-carb products.
Q4: How many net carbs should I eat on keto?
A: Typically 20-50 grams per day, but this varies by individual metabolism, activity level, and weight loss goals.
Q5: Are all sugar alcohols treated equally?
A: No, some like erythritol have almost zero glycemic impact, while others like maltitol have higher effects. The formula provides a general guideline.