Net Carbs Calculator
The carbs that actually count on keto
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Net carbs are the carbohydrates your body digests into glucose — total carbohydrates minus fiber and (by the common convention) half of any sugar alcohols. On keto and low-carb diets people track net carbs rather than total carbs because fiber and most sugar alcohols have little impact on blood sugar. Enter the values from a nutrition label to get both the standard net carbs and the simpler fiber-only figure used in some countries.
Net carbs estimate the carbohydrates that actually raise blood sugar. The common low-carb method subtracts all fiber and half of sugar alcohols from total carbs. Fiber and most sugar alcohols are poorly absorbed, so they have little effect on blood glucose.
Frequently Asked Questions
- What are net carbs?
- Net carbs are the carbohydrates your body actually digests and absorbs as glucose. They are calculated by subtracting fiber and sugar alcohols from total carbohydrates, since those components have little effect on blood sugar.
- How do I calculate net carbs?
- Take the total carbohydrate grams from a food label and subtract grams of fiber and sugar alcohols. The result is your net carbs. This calculator does the subtraction for you so you can track the carbs that matter for low-carb diets.
- Why do net carbs matter for keto?
- Keto and low-carb plans limit the carbs that raise blood sugar, and net carbs measure exactly that. Counting net rather than total carbs lets you fit more fibrous vegetables into your day while staying under your carb limit.