Question 1

How do you calculate net carbs?

Accepted Answer

Net carbs = total carbohydrates − dietary fiber − (sugar alcohols ÷ 2). Fiber and most sugar alcohols (like erythritol) are not absorbed and don't raise blood sugar, so they're subtracted from the total.

Question 2

Do sugar alcohols count as carbs?

Accepted Answer

Sugar alcohols are partially absorbed. For keto and diabetes carb counting, subtract erythritol fully and subtract other sugar alcohols (xylitol, maltitol, sorbitol) at half their gram value.

Question 3

Does fiber count as carbs?

Accepted Answer

Total carbs include fiber, but for net carbs you subtract fiber because it isn't digested and doesn't raise blood glucose. This is the standard for keto, Atkins, and most diabetes carb-ratio calculations.

Question 4

How do you calculate an insulin dose from carbs?

Accepted Answer

Insulin units = grams of carbs ÷ insulin-to-carb ratio. A 1:10 ratio means 1 unit of rapid-acting insulin per 10 g of carbs — so a 60 g carb meal needs 6 units.

Question 5

How many net carbs are allowed on keto?

Accepted Answer

Standard ketogenic diets target 20–50 g of net carbs per day. Strict keto stays under 20 g; moderate keto allows up to 50 g while still typically maintaining ketosis.

Carb Counting Calculator

Add Foods to Meal

Your Meal

Meal Totals

Insulin Calculator

Related Converters