1 piece (1/6 of 8" square, approx 2-1/2" x 4")
424 kcal
206 g
Lasagna with meat, home recipe has about 515 calories per USDA reference amount in the cited USDA reference record. Use the portion controls and preparation factors below to interpret the estimate.
What this number means
A USDA reference amount weighing 250 grams has about 515 calories in the cited source record.
The listed household measures span roughly 43–515 calories across the listed portions. That range describes the source portions below; it is not a confidence interval and does not capture every recipe.
Calculated from the smallest and largest usable household measures listed by USDA for this exact FNDDS record; not a confidence interval.
Portion explorer
Move the slider to scale the source values. This is a mathematical comparison, not an analysis of your exact plate.
Household measures
These values scale the source nutrition by gram weight. Rounding keeps the comparison readable.
424 kcal
206 g
478 kcal
232 g
515 kcal
250 g
43 kcal
21 g
At a glance
The strongest supplied Daily Value signals, shown without extrapolating missing values.
Saturated fat
14.1 g≈ 70% Daily ValueProtein
34 g≈ 68% Daily ValueCalcium
680 mg≈ 52% Daily ValueSource-serving signals
These observations are calculated from the cited USDA reference amount. They describe the database serving, not a measurement or recommendation for your plate.
Nutrition facts
Values are rounded for readability. The source serving is 250 g.
| Nutrient | Amount | Approx. % Daily Value |
|---|---|---|
| Calories | 515 kcal 206 kcal | — |
| Protein | 34 g 13.6 g | 68% |
| Carbohydrate | 32.8 g 13.1 g | — |
| Total fat | 27.3 g 10.9 g | — |
| Dietary fiber | 2.8 g 1.1 g | — |
| Sugars | 3.7 g 1.5 g | — |
| Sodium | 1,040 mg 416 mg | — |
| Saturated fat | 14.1 g 5.6 g | 70% |
| Monounsaturated Fat | 7.4 g 3 g | — |
| Polyunsaturated Fat | 1.7 g 0.7 g | — |
| Cholesterol | 107.5 mg 43 mg | — |
| Potassium | 420 mg 168 mg | — |
| Calcium | 680 mg 272 mg | 52% |
| Iron | 2.3 mg 0.9 mg | — |
| Magnesium | 55 mg 22 mg | — |
| Vitamin C | 7.5 mg 3 mg | — |
| Vitamin D | 0.5 µg 0.2 µg | — |
| Vitamin A | 225 µg 90 µg | — |
| Caffeine | 0 mg 0 mg | — |
| Alcohol | 0 g 0 g | — |
| Water | 150.5 g 60.2 g | — |
Daily Values appear only when they are supplied by the reviewed data record. Individual needs differ.
What changes the estimate most?
Food estimates can be sensitive to portion weight, preparation, ingredient ratios, and additions that are difficult to judge from appearance alone.
amount served
cooked-to-dry ratio
sauce or mix-ins
added fat
How we estimated this
This profile uses FoodData Central Survey Foods (FNDDS). It reports the source serving, calculates the 100-gram comparison from the same record, and scales household portions by their listed gram weights.
About the serving label: USDA describes the underlying portion as “Typical reported amount.” We display it as “USDA reference amount” to make clear that it is a database comparison point—not a suggested portion or a claim about what most people should eat.
Data cycle: 2021–2023, published 2024-10-31
FoodData Central ID: 2708753
It does not reconstruct every possible recipe or infer your plate’s weight. Preparation and recipe differences belong in the uncertainty explanation, not hidden decimal places.
Source release 2024-10-31. Read the full nutrition methodology.