Crab vs Lobster

Per 100 g, Crab has 68 kcal and 15.4 g protein, while Lobster has 90 kcal and 18.5 g protein.

Crab

68
kcal per 100 g
15.4 g protein

Lobster

90
kcal per 100 g
18.5 g protein

Nutrition compared, per 100 g

Both foods are shown per 100 g so the numbers are directly comparable. A single serving of each is a different size, so serving-for-serving figures would not tell you much.

Nutrient Crab Lobster Difference
Calories Fewer calories for the same weight 68 kcal better 90 kcal 24%
Protein More protein helps with fullness and muscle 15.4 g 18.5 g better 17%
Carbs Lower carbs suits low-carb and diabetic diets 0 g 0 g about the same
Fat Lower fat means lower calorie density 0.6 g better 0.8 g 25%
Fiber More fibre improves fullness and digestion 0 g 0 g about the same
Sugar Less sugar means a gentler blood-sugar response 0 g 0 g about the same
"Better" marks the more favourable value for a general healthy-eating goal, not a judgement about the food overall. Differences under 5% are treated as equivalent.

Which is better for weight loss?

Crab

Crab is the lighter choice at 68 kcal per 100 g against 90 for Lobster — about 24% fewer calories for the same weight on your plate. That does not make Lobster a bad food; it means the portion has to be smaller to fit the same calorie budget.

Which is better for muscle gain?

Lobster

Lobster is the stronger protein source, with 18.5 g per 100 g against 15.4 g for Crab. To match that from Crab you would have to eat roughly 1.2 times the volume, which is usually the limiting factor when you are trying to hit a protein target. Worth noting the trade-off: Crab is more efficient per calorie (22.6 g of protein per 100 kcal against 20.6 g), so it is the better pick if you are also holding calories down.

Crab vs Lobster — common questions

Lobster has more calories — about 90 kcal per 100 g compared with 68 kcal for Crab.

Lobster has more protein — 18.5 g per 100 g against 15.4 g for Crab.

Crab is the lighter choice at 68 kcal per 100 g against 90 for Lobster — about 24% fewer calories for the same weight on your plate. That does not make Lobster a bad food; it means the portion has to be smaller to fit the same calorie budget.

Lobster is the stronger protein source, with 18.5 g per 100 g against 15.4 g for Crab. To match that from Crab you would have to eat roughly 1.2 times the volume, which is usually the limiting factor when you are trying to hit a protein target. Worth noting the trade-off: Crab is more efficient per calorie (22.6 g of protein per 100 kcal against 20.6 g), so it is the better pick if you are also holding calories down.

Yes. Combining them gives roughly 158 kcal and 33.9 g protein per 100 g of each. Indian meals are usually built from pairs like this, and mixing a grain with a protein source generally makes for a better-balanced plate than either on its own.

For most everyday goals Crab has the edge, mainly on calorie density. Per 100 g, Crab has 68 kcal and 15.4 g protein, while Lobster has 90 kcal and 18.5 g protein. Healthy eating depends far more on total daily intake and portion size than on picking one of these two.
Full Crab nutrition & serving sizes
Full Lobster nutrition & serving sizes

Other comparisons

Crab vs Chana Masala

Data source: nutrition values are drawn from the Indian Nutrient Databank (INDB), Vijayakumar et al., Curr Dev Nutr 2024;8(7):103790, used under CC BY 4.0, and derived from the ICMR-NIN Indian Food Composition Tables. Values vary with recipe, oil used and regional style.

General information only, not medical advice. See our disclaimer.