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Net Carbs Formula:
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Net carbohydrates represent the total carbohydrates in food minus the fiber content. This calculation is particularly important for low-carb and ketogenic diets, as fiber is not digested and doesn't significantly impact blood sugar levels.
The calculator uses the simple formula:
Where:
Explanation: Fiber is subtracted from total carbohydrates because it passes through the digestive system largely undigested and doesn't contribute to net carbohydrate absorption.
Details: Calculating net carbs helps individuals following specific diets (like keto) track their actual carbohydrate intake that affects blood sugar and insulin levels. It provides a more accurate picture of digestible carbohydrates.
Tips: Enter total carbohydrates and fiber content in grams. Both values must be non-negative numbers. The calculator will automatically compute the net carbohydrates.
Q1: Why calculate net carbs instead of total carbs?
A: Net carbs represent the carbohydrates that actually impact blood sugar levels, making them more relevant for blood sugar management and low-carb diets.
Q2: What are typical net carb targets?
A: For ketogenic diets, typically 20-50g net carbs daily; for low-carb diets, 50-100g; moderate carb diets may allow 100-150g net carbs.
Q3: Should I subtract sugar alcohols too?
A: Some diets also subtract sugar alcohols, but this varies by diet plan. Check your specific dietary guidelines for complete instructions.
Q4: Are net carbs the same worldwide?
A: In some countries like the UK, fiber is already subtracted from total carbs on nutrition labels, so net carbs calculation may differ.
Q5: Can net carbs be negative?
A: No, net carbs cannot be negative. If fiber exceeds total carbs, net carbs are considered zero since you can't have negative digestible carbohydrates.