Net Carbs Formula:
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Net carbs represent the carbohydrates that significantly impact blood sugar levels. They are calculated by subtracting fiber and half of sugar alcohols from total carbohydrates, as these components have minimal effect on blood glucose.
The calculator uses the net carbs formula:
Where:
Explanation: Fiber is subtracted entirely as it's not digested, while sugar alcohols are partially subtracted (divided by 2) as they have about half the impact on blood sugar compared to regular carbs.
Details: Calculating net carbs is essential for individuals following ketogenic diets, as it helps maintain ketosis by tracking only the carbohydrates that significantly affect blood sugar levels. It's also important for diabetics managing carbohydrate intake.
Tips: Enter total carbohydrates, fiber, and sugar alcohols in grams. All values must be non-negative. For accurate results, use nutritional information from food labels or reliable databases.
Q1: Why subtract only half of sugar alcohols?
A: Sugar alcohols have about half the glycemic impact of regular carbohydrates, so they are only partially counted in net carb calculations.
Q2: Are all sugar alcohols treated equally?
A: While the formula treats all sugar alcohols the same, some (like erythritol) have even less impact on blood sugar. However, the standard calculation uses the half-subtraction method for consistency.
Q3: What is a typical net carbs target for keto?
A: Most ketogenic diets recommend 20-50 grams of net carbs per day to maintain ketosis, though individual needs may vary.
Q4: Should I count all fiber?
A: Yes, all dietary fiber can be subtracted from total carbs as it doesn't significantly impact blood sugar levels.
Q5: Can net carbs be negative?
A: No, the calculator ensures net carbs results are never negative. If calculations would result in a negative value, it returns 0.