Carbs in Mac And Cheese: The Quick Answer
Mac And Cheese contains 19.6g of net carbs per 100g, calculated by subtracting 0.5g of dietary fiber from 20.1g of total carbohydrates. With 110.0 calories, 3.3g protein, and 1.9g fat per 100g, it is classified as Moderate Carbs for carbohydrate content.
Net carbs — not total carbs — are what matter for keto and low-carb diets. Only net carbs raise blood sugar and affect insulin, which is why tracking them accurately is key to staying in ketosis. Use our Keto Macro Calculator to find your daily net carb limit based on your body and goals.
Is Mac And Cheese Keto Friendly?
Mac And Cheese has 19.6g net carbs per 100g, which is moderate. It can be included occasionally on keto if portions are controlled and the rest of your day's carbs are kept very low.
Best Low-Carb Swaps for Mac And Cheese
Mac And Cheese is high in carbs. If you're eating low-carb or keto, these swaps deliver the same satisfaction with a fraction of the net carbs.
| Instead of | Try this | Why it helps |
|---|---|---|
| Mac and cheese (~21g net carbs per 100g) | Cauliflower mac and cheese | Steam cauliflower florets, top with the same cheese sauce — ~4g net carbs |
| Boxed mac and cheese | Shirataki mac and cheese (shirataki noodles + homemade cheese sauce) | Near-zero carb noodles + full-fat cheddar sauce |
| Baked mac and cheese | Cauliflower gratin (cauli + gruyère + cream + breadcrumb substitute: pork rinds) | Rich, bubbly, golden — ~5g net carbs |
How Net Carbs Are Calculated
Net carbs are calculated by subtracting dietary fiber (and sugar alcohols, if present) from total carbohydrates: Net Carbs = Total Carbs − Fiber. For Mac And Cheese: 20.1g − 0.5g = 19.6g net carbs per 100g.
Dietary fiber is subtracted because it passes through the digestive system without being absorbed as glucose. It does not raise blood sugar or trigger an insulin response, making it irrelevant for carb counting on keto and low-carb diets.