Energy
lower quarter51 kcalthis record per 100 g
- Corpus median
- 109 kcal
- Middle 50%
- 92–183 kcal
Based on 30 records reporting energy.
Fish & seafoodmoderate variability
Oysters, raw calories: 43 per 85 g
This exact USDA record reports 43 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
- 43 kcal
- Protein
- 4.9 g
- Carbohydrate
- 2.3 g
- Total fat
- 1.5 g
- Fiber
- 0 g
- Sodium
- 72 mg
Portion calculator
Estimate your portion
Choose a source measure or enter the weight you ate.
Estimated for 85 g
43calories
Oysters, raw
- Protein
- 4.9 g
- Carbs
- 2.3 g
- Fat
- 1.5 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 43 calories for USDA reference amount at 85 grams. On a fixed-weight basis, the same record contains 51 calories per 100 grams. The first number answers a portion question; the second answers a concentration question.
Composition: that source amount also reports 4.9 g protein, 0 g fiber, and 72 mg sodium. Read those values together: a calorie total by itself cannot describe the nutrient profile.
Identity: the largest listed formulation input is mollusks, oyster, eastern, wild, raw, 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 8–115 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 2706351: “Oysters, raw.” 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 2706351, each row multiplies the published per-100-gram values by its stated weight. “1 oyster” through “1 cup” are weight scenarios: named measures come from USDA, while percentage labels are transparent arithmetic.
| Scenario | Weight | Energy | Protein | Fiber | Sodium |
|---|---|---|---|---|---|
| 1 oysterUSDA-listed household measure | 15 g | 8 kcal | 0.9 g | 0 g | 13 mg |
| USDA reference amountExact record reference weight | 85 g | 43 kcal | 4.9 g | 0 g | 72 mg |
| 1 cupUSDA-listed household measure | 225 g | 115 kcal | 12.8 g | 0 g | 191 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 2706351’s energy position in that corpus—not nutritional quality, desirability, or a health rating.
Protein
lower quarter5.7 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
lower quarter85 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 2706351’s 85 g reference weight, the largest strength-side percentage among the nutrients evaluated here is Iron; 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
Iron4 mg
≈ 22% DV. This crosses the FDA’s 20% ‘high’ guide.
Tradeoff-side signals
Sodium72 mg
≈ 3% DV. This does not cross the FDA’s 20% ‘high’ guide.
Saturated fat0.4 g
≈ 2% DV. This does not cross the FDA’s 20% ‘high’ guide.
04 · Highest-impact checks
The three levers most worth resolving first
For “Oysters, raw,” the first-pass checks follow the evidence actually published: its named weights, the FDC 2706353 alternative, and its source-formulation identity.
- 01
Listed portion span: 1 oyster to 1 cup
USDA assigns those measures 15 g and 225 g. At this record’s fixed composition, scaled energy moves from 8 kcal to 115 kcal.
- 02
Record choice: compare with FDC 2706353
At an equal 100 g, this record has 14 kcal less calories than “Oysters, steamed.” That is a record-level contrast; it does not identify which ingredient caused the difference.
- 03
Single listed source: Mollusks, oyster, eastern, wild, 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 “raw” fits. Inspect FDC 2706353 when “steamed” is the more literal description of the food and preparation.
Keep this profile when these fields fit
Oysters, raw
- Exact source wording
- “Oysters, raw”
- Source identity
- USDA FDC 2706351 · FNDDS 26315100
- Named qualifiers
- raw
Inspect this alternative when its fields fit better
Oysters, steamed
- Exact source wording
- “Oysters, steamed”
- Source identity
- USDA FDC 2706353 · FNDDS 26315130
- Named qualifiers
- steamed
Choose the closest description
Which USDA record fits your meal?
Treat the long description as data. The phrases doing the most work here are “raw”. 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 recordOysters, raw | 85 g43 kcal | 51 kcal | 5.7 g | 1.7 g | 0 g | 85 mg |
| Oysters, steamed | 85 g55 kcal | 65 kcal | 7.2 g | 2.2 g | 0 g | 108 mg |
| Oysters, canned | 85 g63 kcal | 74 kcal | 7.7 g | 2.7 g | 0 g | 122 mg |
| Clams, raw | 85 g73 kcal | 86 kcal | 14.7 g | 1 g | 0 g | 56 mg |
| Oysters, fried | 85 g173 kcal | 203 kcal | 6.3 g | 13.5 g | 0.5 g | 408 mg |
| Oysters, baked or broiled | 85 g88 kcal | 104 kcal | 7.1 g | 6.7 g | 0 g | 321 mg |
How to compare FDC 2706351: 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 2706351, the 2 displayed measures scale the same source composition by gram weight; rounding changes presentation, not the underlying ratio.
1 oyster
8 kcal
15 g
1 cup
115 kcal
225 g
At a glance
Nutrient signals in the source amount
For FDC 2706351, Iron is the largest displayed non-protein Daily Value signal. Read the set as label context—not a personalized score.
Iron
3.9 mg≈ 22% Daily ValueCholesterol
34 mg≈ 11% Daily ValueThe percentages above apply to FDC 2706351’s 85 g reference amount. FDA Daily Values are general label references, not individualized energy or medical targets. Read the FDA explanation ↗
Why FDC 2706351 has no protein percentage here: Feast reports 4.9 g, but does not present grams divided by 50 as FDA protein %DV; applicable label rules account for protein quality and regulatory context.
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 | 43 kcal 51 kcal | Not established Not established |
| Protein | 4.9 g 5.7 g | Not shown Not shown |
| Carbohydrate | 2.3 g 2.7 g | 1% 1% |
| Total fat | 1.5 g 1.7 g | 2% 2% |
| Dietary fiber | 0 g 0 g | 0% 0% |
| Sugars | 0.5 g 0.6 g | Not established Not established |
| Sodium | 72.3 mg 85 mg | 3% 4% |
| Saturated fat | 0.4 g 0.5 g | 2% 2% |
| Monounsaturated Fat | 0.2 g 0.3 g | Not established Not established |
| Polyunsaturated Fat | 0.4 g 0.5 g | Not established Not established |
| Cholesterol | 34 mg 40 mg | 11% 13% |
| Potassium | 132.6 mg 156 mg | 3% 3% |
| Calcium | 50.2 mg 59 mg | 4% 5% |
| Iron | 3.9 mg 4.6 mg | 22% 26% |
| Magnesium | 15.3 mg 18 mg | 4% 4% |
| Vitamin C | 0 mg 0 mg | 0% 0% |
| Vitamin D | 0 µg 0 µg | 0% 0% |
| Vitamin A | 11.1 µg 13 µg | 1% 1% |
| Caffeine | 0 mg 0 mg | Not established Not established |
| Alcohol | 0 g 0 g | Not established Not established |
| Water | 75.7 g 89 g | Not established Not established |
For FDC 2706351, 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 2706351 to one source input totaling 100 g in its standardized formulation. Publishing that exact provenance makes “Oysters, raw” inspectable beside similarly named records.
How to read this
A single-source formulation
Mollusks, oyster, eastern, wild, 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 | Mollusks, oyster, eastern, wild, rawUSDA ingredient 15167 · encyclopedia page available | 100 GM | 100 g | 100% |
Exact-record context
What makes this USDA record distinct?
For FDC 2706351, 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
Oysters, raw
- USDA category
- Shellfish
- FDC ID
- 2706351
- FNDDS code
- 26315100
Closest inspectable record
Oysters, steamed
- USDA category
- Shellfish
- FDC ID
- 2706353
- FNDDS code
- 26315130
| Nutrient | This record | Comparison record | Difference |
|---|---|---|---|
| Calories | 51 kcal | 65 kcal | −14 kcal |
| Protein | 5.7 g | 7.2 g | −1.5 g |
| Carbohydrate | 2.7 g | 3.4 g | −0.7 g |
| Total fat | 1.7 g | 2.2 g | −0.5 g |
| Dietary fiber | 0 g | 0 g | Same listed value |
| Sodium | 85 mg | 108 mg | −23 mg |
Plain-English read
At the fixed 100-gram basis, this record lists 14 less calories and 1.5 g less protein than “Oysters, steamed.”
2 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.
Shared listed inputs: Mollusks, oyster, eastern, wild, raw.
The ingredient codes overlap, while at least one listed amount, weight, sequence, or formulation detail differs.
Portion evidence
The listed portion sets differ
This record’s reference amount is 85 g; a familiar listed measure is 1 cup (225 g).
The comparison record’s reference amount is 85 g; a familiar listed measure is 1 cup (135 g).
Use the 100-gram row to compare FDC 2706351 with FDC 2706353 at equal mass; use their 85 g and 85 g source amounts only for portion matching.
Evidence boundary: FDC 2706351 versus FDC 2706353 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 2706351 appears in 2 pair pages 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 “Oysters, raw” beside explicitly linked source records; use them to compare preparations without turning FDC 2706351 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 “Oysters, raw,” 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 2706351 comes from FoodData Central Survey Foods (FNDDS). Its 51 kcal per 100 g becomes 43 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: 2706351
FNDDS food code: 26315100
The scaling for FDC 2706351 can be exact while the match to “Oysters, raw” 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.