Carbs in Lasagna: The Quick Answer
Lasagna contains 12.6g of net carbs per 100g, calculated by subtracting 0.9g of dietary fiber from 13.5g of total carbohydrates. With 135 calories, 7.5g protein, and 5.8g 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 Lasagna Keto Friendly?
Lasagna has 12.6g 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.
Make It Keto: Lasagna
You don't have to skip Lasagna on a low-carb diet — you just need to know what to order (and what to skip).
| When ordering | Make it keto | Carb savings |
|---|---|---|
| Lasagna with pasta (~13g net carbs per 100g) | Zucchini lasagna (thinly sliced zucchini instead of pasta sheets) | Same layers of meat sauce and béchamel — ~4g net carbs per serving |
| Beef and ricotta lasagna | Stuffed bell peppers with meat sauce and ricotta | Same filling but in a pepper shell — ~6g net carbs |
| Lasagna for meal prep | Cauliflower casserole with meat sauce and cheese | Batch-cook the same way — ~4g net carbs per serving |
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 Lasagna: 13.5g − 0.9g = 12.6g 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.