Finfish and Shellfish Products · prepared

Crab calories

Crab (prepared) has about 83 calories per 100 g and 17.9 g of protein. An estimated serving (85 g) is about 71 kcal.

83kcal per 100 g

About 43% fewer calories per 100 g than the average of the 15 finfish and shellfish products in this list (147 kcal).

Calories per 100 g	83 kcal
Protein per 100 g	17.9 g
Category	Finfish and Shellfish Products
Form	prepared
USDA description	Crustaceans, crab, blue, canned

Calories by portion

Portion	Weight	Calories	Weight basis
1 serving	85 g	71 kcal	App estimate
1 cup	135 g	112 kcal	App estimate

Household weights come from the app’s portion table, not necessarily USDA. Rows marked App estimate are estimates; your portion may differ. A serving is not a recommended amount to eat.

Calculate the amount you actually ate

For a measured 150 g of this same food and form: 83 × 150 ÷ 100 = about 124 kcal. Use the per-100-g value with your actual weight; a piece or bowl in the table is only a starting estimate.

Check the USDA description above before choosing a match. Raw, cooked and dry entries are not interchangeable, and a branded or mixed dish may have different ingredients. Missing nutrients are not zero. Read our sources and calculation method.

Log it in seconds. In BiteJot AI you can say or type “crab”, or scan or snap it, then confirm the amount. Calories always come from a database like this one, never from the AI.

Similar foods

Source: USDA FoodData Central, SR Legacy (FDC ID 171966), public domain. Values are averages and can differ for a specific brand, recipe or cut. Estimates only; not medical advice.