Energy
middle half20 kcalthis record per 100 g
- Corpus median
- 27 kcal
- Middle 50%
- 20–33 kcal
Based on 8 records reporting energy.
Sandwiches, burgers & wrapshigher variability
Lettuce, for use on a sandwich calories: 2 per 8 g
This exact USDA record reports 2 calories for 8 g. That answer belongs to this description and weight; it is not a universal value for every meal that shares the name.
Quick facts
USDA reference amount · 8 g
- Calories
- 2 kcal
- Protein
- 0.1 g
- Carbohydrate
- 0.3 g
- Total fat
- 0 g
- Fiber
- 0.1 g
- Sodium
- 2 mg
Portion calculator
Estimate your portion
Choose a source measure or enter the weight you ate.
Estimated for 8 g
2calories
Lettuce, for use on a sandwich
- Protein
- 0.1 g
- Carbs
- 0.3 g
- Fat
- 0 g
— means the source has no value available.
These values scale the selected reference food by weight. Ingredients, preparation, and portion size can change your meal’s estimate.
Nutrition facts, household measures, preparation notes and USDA sources
The editorial read
The useful answer has a weight, a composition, and an identity
Portion: the cited record reports about 2 calories for USDA reference amount at 8 grams. On a fixed-weight basis, the same record contains 20 calories per 100 grams. The first number answers a portion question; the second answers a concentration question.
Composition: that source amount also reports 0.1 g protein, 0.1 g fiber, and 2 mg sodium. Read those values together: a calorie total by itself cannot describe the nutrient profile.
Identity: the largest listed formulation input is lettuce, raw, representing 100% of the record’s listed input weight. These are provenance for a standardized calculation, not a recipe for your plate.
Record-specific decision brief
What the numbers say—and what choice still belongs to you
This analysis belongs to USDA FDC 2710250: “Lettuce, for use on a sandwich.” It separates gram-weight arithmetic, corpus context, label signals, and record selection so one number does not have to answer four different questions.
01 · Portion arithmetic
Three weights, one fixed composition
For FDC 2710250, each row multiplies the published per-100-gram values by its stated weight. “75% of the reference weight” through “125% of the reference weight” are weight scenarios: named measures come from USDA, while percentage labels are transparent arithmetic.
| Scenario | Weight | Energy | Protein | Fiber | Sodium |
|---|---|---|---|---|---|
| 75% of the reference weightArithmetic scenario from the reference weight | 6 g | 1 kcal | 0.1 g | 0.1 g | 1 mg |
| USDA reference amountExact record reference weight | 8 g | 2 kcal | 0.1 g | 0.1 g | 2 mg |
| 125% of the reference weightArithmetic scenario from the reference weight | 10 g | 2 kcal | 0.1 g | 0.1 g | 2 mg |
02 · Fixed-weight context
Where 100 grams sits inside Vegetables on a sandwich
The comparison set contains 8 exact records in the Vegetables on a sandwich USDA category. Here, “middle half” describes FDC 2710250’s energy position in that corpus—not nutritional quality, desirability, or a health rating.
Protein
middle half0.9 gthis record per 100 g
- Corpus median
- 0.9 g
- Middle 50%
- 0.8–2.2 g
Based on 8 records reporting protein.
Dietary fiber
middle half1.3 gthis record per 100 g
- Corpus median
- 1.5 g
- Middle 50%
- 1.2–1.7 g
Based on 8 records reporting dietary fiber.
Sodium
upper quarter23 mgthis record per 100 g
- Corpus median
- 5 mg
- Middle 50%
- 2–11 mg
Based on 8 records reporting sodium.
03 · FDA label lens
The strongest strength-side and tradeoff-side signals
At FDC 2710250’s 8 g reference weight, none of the compatible strength-side nutrients evaluated here reaches 5% Daily Value; the larger tradeoff-side percentage is Sodium. Percentages use FDA label Daily Values, whose general “high” guide begins at 20% Daily Value. This is not an overall score or a personalized target.
Strength-side signals
No compatible strength-side nutrient evaluated here reaches 5% DV at this reference weight, so this page does not manufacture a “strength” from a negligible percentage.
Tradeoff-side signals
Sodium2 mg
≈ 0% DV. This does not cross the FDA’s 20% ‘high’ guide.
Saturated fat0 g
≈ 0% DV. This does not cross the FDA’s 20% ‘high’ guide.
04 · Highest-impact checks
The three levers most worth resolving first
For “Lettuce, for use on a sandwich,” the first-pass checks follow the evidence actually published: its named weights, the FDC 2710248 alternative, and its source-formulation identity.
- 01
Portion sensitivity around 8 g
A 25% weight move in either direction spans 6–10 g. When composition is held constant, those endpoints calculate to 1 kcal and 2 kcal.
- 02
Record choice: compare with FDC 2710248
At an equal 100 g, this record has 14.6 g less total fat than “Avocado, for use on a sandwich.” That is a record-level contrast; it does not identify which ingredient caused the difference.
- 03
Single listed source: Lettuce, raw
USDA derives this record from one listed source-input row at 100 g. Real preparations can still differ in water, cooking state, brand, and served weight.
05 · Exact-record choice
Select by literal evidence, not the shortest name
Keep this record when “for use on a sandwich” fits. Inspect FDC 2710248 when “for use on a sandwich” is the more literal description of the food and preparation.
Keep this profile when these fields fit
Lettuce, for use on a sandwich
- Exact source wording
- “Lettuce, for use on a sandwich”
- Source identity
- USDA FDC 2710250 · FNDDS 89902020
- Named qualifiers
- for use on a sandwich
- Source inputs unique in this pair
- Lettuce, raw
Inspect this alternative when its fields fit better
Avocado, for use on a sandwich
- Exact source wording
- “Avocado, for use on a sandwich”
- Source identity
- USDA FDC 2710248 · FNDDS 89902000
- Named qualifiers
- for use on a sandwich
- Source inputs unique in this pair
- Avocado, raw
Choose the closest description
Which USDA record fits your meal?
Treat the long description as data. The phrases doing the most work here are “for use on a sandwich”. Match those details first; then compare the database weight with the amount you mean.
On smaller screens, focus a nutrition table and scroll horizontally to read every column.
| Exact record | Source serving | Calories / 100 g | Protein / 100 g | Fat / 100 g | Fiber / 100 g | Sodium / 100 g |
|---|---|---|---|---|---|---|
| This recordLettuce, for use on a sandwich | 8 g2 kcal | 20 kcal | 0.9 g | 0.1 g | 1.3 g | 23 mg |
| Tomatoes, for use on a sandwich | 20 g4 kcal | 20 kcal | 0.8 g | 0.3 g | 1.2 g | 4 mg |
| Cucumber, for use on a sandwich | 10 g2 kcal | 16 kcal | 0.6 g | 0.2 g | 0.5 g | 2 mg |
| Pepper, for use on a sandwich | 10 g3 kcal | 27 kcal | 0.8 g | 0.1 g | 1 g | 0 mg |
| Spinach, for use on a sandwich | 10 g3 kcal | 27 kcal | 2.9 g | 0.6 g | 1.6 g | 111 mg |
| Mushrooms, for use on a sandwich | 12 g4 kcal | 31 kcal | 2.9 g | 0.4 g | 1.7 g | 6 mg |
| Onions, for use on a sandwich | 15 g6 kcal | 38 kcal | 0.9 g | 0.1 g | 1.7 g | 1 mg |
How to compare FDC 2710250: its source amount is 8 g; every 100-gram column removes portion size from the record-to-record comparison. Neither denominator determines your plate’s weight or recipe.
Household measures
Compare listed portions
For FDC 2710250, the 1 displayed measure scale the same source composition by gram weight; rounding changes presentation, not the underlying ratio.
Quantity not specified
2 kcal
8 g
At a glance
Nutrient signals in the source amount
For FDC 2710250, Vitamin A is the largest displayed non-protein Daily Value signal. Read the set as label context—not a personalized score.
Vitamin A
24.2 µg≈ 3% Daily ValueVitamin C
0.6 mg≈ 1% Daily ValueDietary fiber
0.1 g≈ 0% Daily ValueThe percentages above apply to FDC 2710250’s 8 g reference amount. FDA Daily Values are general label references, not individualized energy or medical targets. Read the FDA explanation ↗
Nutrition facts
Compare the source serving with 100 grams
Values are rounded for readability. The source serving is 8 g.
| Nutrient | Amount | Approx. % Daily Value |
|---|---|---|
| Calories | 2 kcal 20 kcal | Not established Not established |
| Protein | 0.1 g 0.9 g | Not shown Not shown |
| Carbohydrate | 0.3 g 3.7 g | 0% 1% |
| Total fat | 0 g 0.1 g | 0% 0% |
| Dietary fiber | 0.1 g 1.3 g | 0% 5% |
| Sugars | 0.1 g 1.1 g | Not established Not established |
| Sodium | 1.8 mg 23 mg | 0% 1% |
| Saturated fat | 0 g 0 g | 0% 0% |
| Monounsaturated Fat | 0 g 0 g | Not established Not established |
| Polyunsaturated Fat | 0 g 0.1 g | Not established Not established |
| Cholesterol | 0 mg 0 mg | 0% 0% |
| Potassium | 19.9 mg 249 mg | 0% 5% |
| Calcium | 2.5 mg 31 mg | 0% 2% |
| Iron | 0 mg 0.3 mg | 0% 1% |
| Magnesium | 0.9 mg 11 mg | 0% 3% |
| Vitamin C | 0.6 mg 8 mg | 1% 9% |
| Vitamin D | 0 µg 0 µg | 0% 0% |
| Vitamin A | 24.2 µg 302 µg | 3% 34% |
| Caffeine | 0 mg 0 mg | Not established Not established |
| Alcohol | 0 g 0 g | Not established Not established |
| Water | 7.6 g 94.7 g | Not established Not established |
For FDC 2710250, approximate percentages divide the displayed 8 g amount by FDA label Daily Values; they are not personalized targets. “Not established” means FDA sets no Daily Value for that row. Protein %DV remains unshown because adult-label use depends on regulatory context.
Inside the source record
Source formulation behind this USDA record
USDA links FDC 2710250 to one source input totaling 100 g in its standardized formulation. Publishing that exact provenance makes “Lettuce, for use on a sandwich” inspectable beside similarly named records.
How to read this
A single-source formulation
Lettuce, raw is the only listed source input for this record. That does not mean every real-world version is identical; brands, preparation, water content, and portion weight can still differ.
100 g total listed input weight across the formulation.
| # | USDA input | Listed amount | Input weight | Share of listed input weight |
|---|---|---|---|---|
| 1 | Lettuce, rawUSDA ingredient 75113000 | 100 GM | 100 g | 100% |
Exact-record context
What makes this USDA record distinct?
For FDC 2710250, the close-record rule searches the USDA “Vegetables on a sandwich” category for shared description terms or source inputs. Any surviving pair is compared per 100 grams, so unlike source-serving sizes cannot manufacture the nutrient difference.
This record
Lettuce, for use on a sandwich
- USDA category
- Vegetables on a sandwich
- FDC ID
- 2710250
- FNDDS code
- 89902020
Closest inspectable record
Avocado, for use on a sandwich
- USDA category
- Vegetables on a sandwich
- FDC ID
- 2710248
- FNDDS code
- 89902000
| Nutrient | This record | Comparison record | Difference |
|---|---|---|---|
| Calories | 20 kcal | 160 kcal | −140 kcal |
| Protein | 0.9 g | 2 g | −1.1 g |
| Carbohydrate | 3.7 g | 8.5 g | −4.8 g |
| Total fat | 0.1 g | 14.7 g | −14.6 g |
| Dietary fiber | 1.3 g | 6.7 g | −5.4 g |
| Sodium | 23 mg | 7 mg | +16 mg |
Plain-English read
At the fixed 100-gram basis, this record lists 140 less calories, 1.1 g less protein, and 4.8 g less carbohydrate than “Avocado, for use on a sandwich.”
Only this record lists Lettuce, raw. Only the comparison record lists Avocado, raw. Those formulation rows identify different source records; they do not prove which input caused a nutrient difference.
5 of the six displayed differences clear the documented materiality screen. It is a reading aid, not a health rating.
Formulation evidence
The listed formulations differ
The formulation rows differ, but the source data do not isolate which component caused any nutrient difference. Input weights describe the standardized formulation—not final plated proportions.
Listed only in this record: Lettuce, raw.
Listed only in the comparison: Avocado, raw.
Portion evidence
The listed portion sets differ
This record’s reference amount is 8 g.
The comparison record’s reference amount is 30 g.
Use the 100-gram row to compare FDC 2710250 with FDC 2710248 at equal mass; use their 8 g and 30 g source amounts only for portion matching.
Evidence boundary: FDC 2710250 versus FDC 2710248 is a comparison of standardized source records—not a measurement of your meal, an overall food-quality rank, or proof that one input caused a difference.
Review the full vegetables on a sandwich source category → Read the calculation and selection methodology →
From record to familiar meal
Guides that use this exact USDA record
These 1 guide place “Lettuce, for use on a sandwich” beside explicitly linked source records; use them to compare preparations without turning FDC 2710250 into a universal recipe.
Uncertainty, made actionable
What can change this estimate?
This is a standardized USDA survey-food profile, not a measurement of every preparation. Actual nutrition can change with item size, bread or wrapper size, fillings, sauces and cheese.
For “Lettuce, for use on a sandwich,” resolve item size first, then move through the remaining 3 published levers. Unknowns should remain visible rather than expanding every assumption at once.
- 01
item size
When composition is held constant, nutrient totals scale directly with grams. A 20% weight correction produces the same 20% correction to the scaled totals.
- 02
bread or wrapper size
Resolve bread or wrapper size only when the meal or its source gives you evidence. If it is unknown, leave the uncertainty visible instead of choosing the most convenient variant.
- 03
fillings
Check whether the exact source description already includes it. If not, keep the addition separate rather than silently folding it into the base record.
- 04
sauces and cheese
Check whether the exact source description already includes it. If not, keep the addition separate rather than silently folding it into the base record.
How we estimated this
The arithmetic is simple; the provenance is the point
FDC 2710250 comes from FoodData Central Survey Foods (FNDDS). Its 20 kcal per 100 g becomes 2 kcal at 8 g through nutrient per portion = nutrient per 100 g × portion grams ÷ 100; this page adds no second nutrition estimate.
About the serving label: USDA describes the underlying survey portion as “Quantity not specified.” We display it as a USDA reference amount because it is a database comparison point—not a suggested portion or a claim about what most people should eat.
Data cycle: 2021–2023, published October 31, 2024
FoodData Central ID: 2710250
FNDDS food code: 89902020
The scaling for FDC 2710250 can be exact while the match to “Lettuce, for use on a sandwich” is wrong. That is why this profile keeps its 8 g weight, 1-row source formulation, and selection uncertainty beside the arithmetic.
Source release October 31, 2024. Review USDA’s data-type documentation ↗ · Read Feast’s full nutrition methodology.