A typical serving of lasagna (1 restaurant serving, 457 g) has about 845 calories. Per 100 g: 185 kcal, 10.8 g protein, 11.4 g carbs, 10.7 g fat. The same 100 g carries 1.5 g of fiber and 3.2 g of sugar. The energy comes from a mix of carbs, fat, and protein.
| Serving | Weight | Calories |
|---|---|---|
| 1 restaurant serving | 457 g | 845 kcal |
| 100 g | 100 g | 185 kcal |
Pasta, meat, and three layers of cheese: a restaurant portion easily passes 500 calories. On the energy-density scale, 185 kcal per 100 g puts lasagna at the moderate end. Protein density is strong: about 5.8 g of protein per 100 calories.
A typical serving (1 restaurant serving, 457 g) has about 845 calories, and 100 g has 185 kcal. Calories scale with weight, so double the portion means double the number.
There are 10.8 g of protein in 100 g of lasagna, which works out to about 49.4 g per serving (1 restaurant serving). It contributes meaningful protein, though most of the calories come from elsewhere.
Yes, in the plain arithmetic sense: 10.7 g of fat per 100 g supplies about 52% of the calories. Whether that fits your day depends on your totals, not on the food alone.
Every value on this page comes from USDA FoodData Central, entry 169850 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 169850 (SR Legacy). Serving calories are computed from the per-100-g values.
