Energy
lower quarter83 kcalthis record per 100 g
- Corpus median
- 109 kcal
- Middle 50%
- 92–183 kcal
Based on 30 records reporting energy.
Fish & seafoodmoderate variability
Crab calories: 71 per 85 g
This exact USDA record reports 71 calories for 85 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 · 85 g
- Calories
- 71 kcal
- Protein
- 15.2 g
- Carbohydrate
- 0 g
- Total fat
- 0.6 g
- Fiber
- 0 g
- Sodium
- 336 mg
Portion calculator
Estimate your portion
Choose a source measure or enter the weight you ate.
Estimated for 85 g
71calories
Crab
- Protein
- 15.2 g
- Carbs
- 0 g
- Fat
- 0.6 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 71 calories for USDA reference amount at 85 grams. On a fixed-weight basis, the same record contains 83 calories per 100 grams. The first number answers a portion question; the second answers a concentration question.
Composition: that source amount also reports 15.2 g protein, 0 g fiber, and 336 mg sodium. Read those values together: a calorie total by itself cannot describe the nutrient profile.
Identity: the largest listed formulation input is crustaceans, crab, blue, cooked, moist heat, representing 100% of the record’s listed input weight. These are provenance for a standardized calculation, not a recipe for your plate.
The reference amount and 1 cup answer different portion questions. Their values are scaled independently from the same per-100-gram source record.
The household measures attached to this record span roughly 12–112 calories across the listed portions. That is a set of scaled examples—not a confidence interval, a recommendation, or a claim about the full universe of recipes.
Calculated from the smallest and largest usable household measures listed by USDA for this exact FNDDS record; not a confidence interval.
Record-specific decision brief
What the numbers say—and what choice still belongs to you
This analysis belongs to USDA FDC 2706344: “Crab.” 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 2706344, each row multiplies the published per-100-gram values by its stated weight. “1 leg” through “1 cup” are weight scenarios: named measures come from USDA, while percentage labels are transparent arithmetic.
| Scenario | Weight | Energy | Protein | Fiber | Sodium |
|---|---|---|---|---|---|
| 1 legUSDA-listed household measure | 15 g | 12 kcal | 2.7 g | 0 g | 59 mg |
| 1 crabUSDA-listed household measure | 40 g | 33 kcal | 7.2 g | 0 g | 158 mg |
| 1 cupUSDA-listed household measure | 135 g | 112 kcal | 24.2 g | 0 g | 533 mg |
02 · Fixed-weight context
Where 100 grams sits inside Shellfish
The comparison set contains 30 exact records in the Shellfish USDA category. Here, “lower quarter” describes FDC 2706344’s energy position in that corpus—not nutritional quality, desirability, or a health rating.
Protein
middle half17.9 gthis record per 100 g
- Corpus median
- 15.4 g
- Middle 50%
- 13.1–18.1 g
Based on 30 records reporting protein.
Dietary fiber
middle half0 gthis record per 100 g
- Corpus median
- 0 g
- Middle 50%
- 0–0.3 g
Based on 30 records reporting dietary fiber.
Sodium
middle half395 mgthis record per 100 g
- Corpus median
- 370 mg
- Middle 50%
- 188–414 mg
Based on 30 records reporting sodium.
03 · FDA label lens
The strongest strength-side and tradeoff-side signals
At FDC 2706344’s 85 g reference weight, the largest strength-side percentage among the nutrients evaluated here is Magnesium; 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
Magnesium31 mg
≈ 7% DV. This does not cross the FDA’s 20% ‘high’ guide.
Calcium77 mg
≈ 6% DV. This does not cross the FDA’s 20% ‘high’ guide.
Tradeoff-side signals
Sodium336 mg
≈ 15% DV. This does not cross the FDA’s 20% ‘high’ guide.
Saturated fat0.2 g
≈ 1% DV. This does not cross the FDA’s 20% ‘high’ guide.
04 · Highest-impact checks
The three levers most worth resolving first
For “Crab,” the first-pass checks follow the evidence actually published: its named weights, the FDC 2706345 alternative, and its source-formulation identity.
- 01
Listed portion span: 1 leg to 1 cup
USDA assigns those measures 15 g and 135 g. At this record’s fixed composition, scaled energy moves from 12 kcal to 112 kcal.
- 02
Record choice: compare with FDC 2706345
At an equal 100 g, this record has 168 mg less sodium than “Crab, canned.” That is a record-level contrast; it does not identify which ingredient caused the difference.
- 03
Single listed source: Crustaceans, crab, blue, cooked, moist heat
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 the exact wording “Crab” fits. Inspect FDC 2706345 when “canned” is the more literal description of the food and preparation.
Keep this profile when these fields fit
Crab
- Exact source wording
- “Crab”
- Source identity
- USDA FDC 2706344 · FNDDS 26305160
- Source inputs unique in this pair
- Crustaceans, crab, blue, cooked, moist heat
Inspect this alternative when its fields fit better
Crab, canned
- Exact source wording
- “Crab, canned”
- Source identity
- USDA FDC 2706345 · FNDDS 26305180
- Named qualifiers
- canned
- Source inputs unique in this pair
- Crustaceans, crab, blue, canned
Choose the closest description
Which USDA record fits your meal?
Begin with the exact USDA description, then compare preparation, additions, and gram weight. A nearby record is useful only when its identity is closer—not simply because its name sounds familiar.
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 recordCrab | 85 g71 kcal | 83 kcal | 17.9 g | 0.7 g | 0 g | 395 mg |
| Crab, canned | 85 g71 kcal | 83 kcal | 17.9 g | 0.7 g | 0 g | 563 mg |
How to compare FDC 2706344: its source amount is 85 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 2706344, the 4 displayed measures scale the same source composition by gram weight; rounding changes presentation, not the underlying ratio.
1 crab
33 kcal
40 g
1 leg
12 kcal
15 g
1 claw
12 kcal
15 g
1 cup
112 kcal
135 g
At a glance
Nutrient signals in the source amount
For FDC 2706344, Cholesterol is the largest displayed non-protein Daily Value signal. Read the set as label context—not a personalized score.
Cholesterol
82.5 mg≈ 28% Daily ValueSodium
335.8 mg≈ 15% Daily ValueThe percentages above apply to FDC 2706344’s 85 g reference amount. FDA Daily Values are general label references, not individualized energy or medical targets. Read the FDA explanation ↗
Why FDC 2706344 has no protein percentage here: Feast reports 15.2 g, but does not present grams divided by 50 as FDA protein %DV; applicable label rules account for protein quality and regulatory context.
Source-serving signals
What stands out in this record
These 1 calculated observation describe FDC 2706344 at 85 g—not a measured or recommended plate.
- The representative USDA portion contains 336 mg sodium, about 15% of the Daily Value used on U.S. labels.
Nutrition facts
Compare the source serving with 100 grams
Values are rounded for readability. The source serving is 85 g.
| Nutrient | Amount | Approx. % Daily Value |
|---|---|---|
| Calories | 71 kcal 83 kcal | Not established Not established |
| Protein | 15.2 g 17.9 g | Not shown Not shown |
| Carbohydrate | 0 g 0 g | 0% 0% |
| Total fat | 0.6 g 0.7 g | 1% 1% |
| Dietary fiber | 0 g 0 g | 0% 0% |
| Sugars | 0 g 0 g | Not established Not established |
| Sodium | 335.8 mg 395 mg | 15% 17% |
| Saturated fat | 0.2 g 0.2 g | 1% 1% |
| Monounsaturated Fat | 0.1 g 0.1 g | Not established Not established |
| Polyunsaturated Fat | 0.2 g 0.3 g | Not established Not established |
| Cholesterol | 82.5 mg 97 mg | 27% 32% |
| Potassium | 220.2 mg 259 mg | 5% 6% |
| Calcium | 77.4 mg 91 mg | 6% 7% |
| Iron | 0.4 mg 0.5 mg | 2% 3% |
| Magnesium | 30.6 mg 36 mg | 7% 9% |
| Vitamin C | 2.8 mg 3.3 mg | 3% 4% |
| Vitamin D | 0 µg 0 µg | 0% 0% |
| Vitamin A | 0.9 µg 1 µg | 0% 0% |
| Caffeine | 0 mg 0 mg | Not established Not established |
| Alcohol | 0 g 0 g | Not established Not established |
| Water | 67.7 g 79.7 g | Not established Not established |
For FDC 2706344, approximate percentages divide the displayed 85 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 2706344 to one source input totaling 100 g in its standardized formulation. Publishing that exact provenance makes “Crab” inspectable beside similarly named records.
How to read this
A single-source formulation
Crustaceans, crab, blue, cooked, moist heat 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 | Crustaceans, crab, blue, cooked, moist heatUSDA ingredient 15140 · encyclopedia page available | 100 GM | 100 g | 100% |
Exact-record context
What makes this USDA record distinct?
For FDC 2706344, the close-record rule searches the USDA “Shellfish” 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
Crab
- USDA category
- Shellfish
- FDC ID
- 2706344
- FNDDS code
- 26305160
Closest inspectable record
Crab, canned
- USDA category
- Shellfish
- FDC ID
- 2706345
- FNDDS code
- 26305180
| Nutrient | This record | Comparison record | Difference |
|---|---|---|---|
| Calories | 83 kcal | 83 kcal | Same listed value |
| Protein | 17.9 g | 17.9 g | Same listed value |
| Carbohydrate | 0 g | 0 g | Same listed value |
| Total fat | 0.7 g | 0.7 g | Same listed value |
| Dietary fiber | 0 g | 0 g | Same listed value |
| Sodium | 395 mg | 563 mg | −168 mg |
Plain-English read
At the fixed 100-gram basis, this record lists 168 mg less sodium than “Crab, canned.”
Only this record lists Crustaceans, crab, blue, cooked, moist heat. Only the comparison record lists Crustaceans, crab, blue, canned. Those formulation rows identify different source records; they do not prove which input caused a nutrient difference.
1 of the six displayed differences clears 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: Crustaceans, crab, blue, cooked, moist heat.
Listed only in the comparison: Crustaceans, crab, blue, canned.
Portion evidence
The listed portion sets differ
This record’s reference amount is 85 g; a familiar listed measure is 1 cup (135 g).
The comparison record’s reference amount is 85 g; a familiar listed measure is 1 small can (60 g).
Use the 100-gram row to compare FDC 2706344 with FDC 2706345 at equal mass; use their 85 g and 85 g source amounts only for portion matching.
Evidence boundary: FDC 2706344 versus FDC 2706345 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 shellfish source category → Read the calculation and selection methodology →
Deep comparisons
Controlled comparisons that include this exact record
FDC 2706344 appears in 1 pair page that passed semantic, material-difference, source-evidence, and diversity gates. Each preserves a 100-gram denominator and both primary records.
From record to familiar meal
Guides that use this exact USDA record
These 1 guide place “Crab” beside explicitly linked source records; use them to compare preparations without turning FDC 2706344 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 portion size, species or cut, cooking method, breading, butter, or sauce.
For “Crab,” resolve portion size first, then move through the remaining 3 published levers. Unknowns should remain visible rather than expanding every assumption at once.
- 01
portion 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
species or cut
Prefer a package, menu, or known recipe when it identifies the food more precisely. Otherwise preserve the generic record as an explicit approximation.
- 03
cooking method
Match the method named by the source—such as baked, fried, boiled, or grilled—before scaling. Preparation can change both water content and the ingredients retained in the finished food.
- 04
breading, butter, or sauce
Match the named cooking-fat state when possible. Fat used, retained, or left behind is preparation information that a dish name alone cannot recover.
How we estimated this
The arithmetic is simple; the provenance is the point
FDC 2706344 comes from FoodData Central Survey Foods (FNDDS). Its 83 kcal per 100 g becomes 71 kcal at 85 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: 2706344
FNDDS food code: 26305160
The scaling for FDC 2706344 can be exact while the match to “Crab” is wrong. That is why this profile keeps its 85 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.