Crab: Nutrition Facts
Generic food Fish and Seafood
Crab contains 83 kcal per 100 g. A typical serving of 1 cup (135 g) provides about 112 kcal.
Roughly 91% of its calories come from protein, with 9% from fat and 0% from carbohydrates (estimated with general energy factors).
That is less energy than the typical item in shellfish on FoodFactly, where the median is 143 kcal per 100 g across 41 foods.
100 g provides 139% of the Daily Value for Vitamin B12, 90% of the Daily Value for copper and 78% of the Daily Value for selenium.
The data comes from the USDA Food and Nutrient Database for Dietary Studies (FNDDS), which calculates values from recipes of the ingredients.
Nutrition facts
| Nutrient | Amount per 100 g | % DV |
|---|---|---|
| Calories C | 83 kcal | |
| Total fat C | 0.74 g | 0.9% |
| Saturated fat C | 0.2 g | 1% |
| Cholesterol C | 97 mg | 32% |
| Sodium C | 395 mg | 17% |
| Total carbohydrates C | 0 g | 0% |
| Dietary fiber C | 0 g | 0% |
| Total sugars C | 0 g | |
| Protein C | 17.9 g | 36% |
| Vitamin A C | 1 µg | 0.1% |
| Vitamin C C | 3.3 mg | 4% |
| Vitamin D C | 0 µg | 0% |
| Vitamin E C | 1.8 mg | 12% |
| Vitamin K C | 0.3 µg | 0.3% |
| Thiamin (B1) C | 0.023 mg | 2% |
| Riboflavin (B2) C | 0.093 mg | 7% |
| Niacin (B3) C | 2.8 mg | 17% |
| Vitamin B6 C | 0.16 mg | 9% |
| Folate (B9) C | 51 µg | 13% |
| Vitamin B12 C | 3.3 µg | 139% |
| Choline C | 80.9 mg | 15% |
| Calcium C | 91 mg | 7% |
| Iron C | 0.5 mg | 3% |
| Magnesium C | 36 mg | 9% |
| Phosphorus C | 234 mg | 19% |
| Potassium C | 259 mg | 6% |
| Zinc C | 3.8 mg | 35% |
| Copper C | 0.81 mg | 90% |
| Selenium C | 42.9 µg | 78% |
% DV: percent of the FDA Daily Value for adults (reference amounts). Letters show how each value was obtained: M measured, C calculated, L label, Z assumed zero, I imputed. Vitamins and minerals not listed were not reported by the source.
Nutritional breakdown
- Protein 91%
- Fat 9%
Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).
Vitamins and minerals, % Daily Value per 100 g
Nutritional insights
- Protein17.9 gabove the median for shellfish (median 15.5 g)
- Sugars0 gin the lowest quarter of shellfish (median 0.01 g)
- Fat0.74 gin the lowest quarter of shellfish (median 5.7 g)
- Saturated fat0.2 gin the lowest quarter of shellfish (median 0.92 g)
- Sodium395 mgabove the median for shellfish (median 363 mg)
- Protein per 100 kcal21.6 gprotein density, useful for comparing foods with different calorie levels
- Water79.7 gwater per 100 g, which largely explains differences between raw, cooked and dried forms
Full nutrient profile
Fats and cholesterol (2)
| Monounsaturated fat C | 0.13 g |
|---|---|
| Polyunsaturated fat C | 0.26 g |
Individual fatty acids (19)
| EPA (omega-3, 20:5 n-3) C | 0.1 g |
|---|---|
| DHA (omega-3, 22:6 n-3) C | 0.067 g |
| Linoleic acid (omega-6, 18:2) C | 0.02 g |
| SFA 4:0 C | 0 g |
| SFA 6:0 C | 0 g |
| SFA 8:0 C | 0 g |
| SFA 10:0 C | 0 g |
| SFA 12:0 C | 0.002 g |
| SFA 14:0 C | 0.008 g |
| SFA 16:0 C | 0.098 g |
| SFA 18:0 C | 0.072 g |
| MUFA 18:1 C | 0.092 g |
| PUFA 18:3 C | 0.009 g |
| PUFA 20:4 C | 0.037 g |
| MUFA 16:1 C | 0.027 g |
| PUFA 18:4 C | 0.002 g |
| MUFA 20:1 C | 0.006 g |
| MUFA 22:1 C | 0 g |
| PUFA 22:5 n-3 (DPA) C | 0.009 g |
Carotenoids (6)
| Beta-carotene C | 0 µg |
|---|---|
| Lycopene C | 0 µg |
| Lutein + zeaxanthin C | 0 µg |
| Retinol C | 1 µg |
| Carotene, alpha C | 0 µg |
| Cryptoxanthin, beta C | 0 µg |
Other components (8)
| Water C | 79.7 g |
|---|---|
| Alcohol C | 0 g |
| Caffeine C | 0 mg |
| Theobromine C | 0 mg |
| Folic acid C | 0 µg |
| Folate, food C | 51 µg |
| Vitamin E, added C | 0 mg |
| Vitamin B-12, added C | 0 µg |
Other forms of Crab
Raw, cooked, dried and processed versions are separate records with their own measured values.
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Crab, canned Canned | 83 | 17.9 g | 0 g | 0.74 g |
| Crab, soft shell | 227 | 15.5 g | 11.7 g | 12.7 g |
| Crab, cake | 214 | 14.4 g | 4.5 g | 15 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Foods with a similar nutritional profile
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Crustaceans, crab, blue swimming, lump, pasteurized, refrigerated | 86 | 18.7 g | 0 g | 0.81 g |
| Fish, tuna, NFS | 85 | 19 g | 0.08 g | 0.94 g |
| Lobster | 97 | 20.9 g | 0 g | 0.95 g |
| Mussels | 109 | 15.1 g | 4.7 g | 2.8 g |
| Fish, surimi | 99 | 15.2 g | 6.9 g | 0.9 g |
| Clams, NFS | 143 | 16.1 g | 6.7 g | 5.2 g |
| Shrimp cocktail | 99 | 13.2 g | 7.9 g | 1.2 g |
| Fish, flounder, NFS | 128 | 15.4 g | 0.01 g | 6.9 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Frequently asked questions
How many calories are in crab?
100 g of crab has 83 kcal. 1 cup (135 g): about 112 kcal. 1 leg (15 g): about 12 kcal. 1 claw (15 g): about 12 kcal.
Is crab high in protein?
Crab contains 17.9 g of protein per 100 g (36% of the 50 g Daily Value), or 24.2 g in 1 cup (135 g). About 91% of its calories come from protein. Compared with other shellfish, that is above the median (median 15.5 g).
How many carbs are in crab?
Crab has 0 g of total carbohydrates per 100 g, including 0 g of fiber and 0 g of sugars.
How much fat is in crab?
Crab contains 0.74 g of fat per 100 g, of which 0.2 g is saturated (1% of the Daily Value).
What vitamins and minerals does crab contain?
Per 100 g, the most notable amounts relative to the Daily Value are Vitamin B12 (139% DV), copper (90% DV), selenium (78% DV), zinc (35% DV) and phosphorus (19% DV). The full list is in the vitamins and minerals table above.
How much sodium is in crab?
100 g contains 395 mg of sodium, 17% of the 2,300 mg Daily Value.
Does crab have the same nutrition not specified and canned?
No. Per 100 g, crab has 83 kcal, while crab, canned has 83 kcal. Processing changes the water content, so always use the record that matches how you weigh the food.
Where does this nutrition data come from?
From USDA FoodData Central: FNDDS (Survey), record dated October 31, 2024. FoodFactly last checked it on November 6, 2026. Each value above shows whether it was measured, calculated or taken from a label.
Source of the nutrition information
- USDA FoodData Central: FNDDS (Survey), record 2706344. License: CC0 1.0 (U.S. public domain). Source record dated October 31, 2024. Imported November 6, 2026.
Last updated: . Data quality score: 100/100 (how it is calculated).
General nutrition information, not medical advice. Individual needs differ; see our disclaimer.