Net Carb Calculator

Enter total carbs, fiber, and sugar alcohols from any food label. Get net carbs per serving for keto, Atkins, and blood-sugar-friendly eating.

How to use this

  1. Grab the food package and find the Nutrition Facts label.
  2. Type in the numbers for one serving — use the lines shown on the label below.
  3. Your net carbs appear on the right. Change servings if you will eat more than one.

Enter numbers from the label

All values are per one serving, exactly as printed on the package.

What we calculate: net carbs = total carbs − fiber − sugar alcohols

Your results (updates as you type)

Your net carbs

This is what counts toward your daily low-carb limit.

Start by entering Total Carbohydrate from the label.

Your number will show here instantly — no button to press.

Frequently asked questions

How do you calculate net carbs?

For most US labels: net carbs = total carbohydrates minus dietary fiber minus sugar alcohols (often erythritol). Always check the product label rules for your diet.

What net carbs are good for insulin resistance?

Many people with insulin resistance aim for 50–100g net carbs per day, or stricter keto at under 20–25g. Work with your healthcare provider for personal targets.

Should I subtract all sugar alcohols?

Erythritol is usually subtracted fully. Other sugar alcohols may affect blood sugar — some people count half. This calculator subtracts the full amount you enter.

Metabolic Low Carb Calculator · https://metaboliclowcarb.com