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Squid

Seafood

Squid

Squid is a high-protein, low-calorie shellfish that provides essential nutrients with virtually zero carbohydrates.

Squid is a marine cephalopod widely consumed globally, known for its mild flavor and firm texture. It is exceptionally low in calories and carbohydrates while being densely packed with high-quality protein and essential micronutrients like vitamin B12 and selenium.

lean protein-dense seafood

Typical serving · 85g

Common varieties · atlantic longfin, pacific market squid, caribbean reef squid, humboldt squid, loligo squid

85health

Overall context score across nutrition, safety, and diet fit

At a glance

Quick facts

Simple indicators based on nutrition, processing, and diet fit.

Low calorieHigh proteinLow carbLow glycemicWeight lossDiabetes-friendly

The story

What makes it unique

Squid digests at a moderate pace due to its dense muscle protein structure, providing steady amino acid release. It contains virtually zero carbohydrates and fiber, resulting in a negligible glycemic impact. The macronutrient profile is heavily skewed toward lean protein with minimal fat, making it highly satiating per calorie. As a wild-caught whole food, it has minimal processing unless prepared into commercial products like breaded rings.

Varieties: atlantic longfin · pacific market squid · caribbean reef squid · humboldt squid · loligo squid

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Per 100g

Nutrition breakdown

Macro balance and key metrics at a glance.

Energy

92kcal

Density 0.92 kcal/g

Protein

15.6g

Carbs

3.1g

Fat

1.4g

Fiber

0g

Sugar

0 g

Sodium

44 mg

Potassium

280 mg

Glycemic index

0

Glycemic load

0

Water content

78.5%

Standout compounds

Nutrient highlights

  • Vitamin B12

    high

    Supports nerve function and red blood cell formation

  • Selenium

    high

    Acts as a powerful antioxidant and supports thyroid health

  • Protein

    high

    Essential for muscle repair, satiety, and enzyme production

  • Copper

    moderate

    Aids in iron absorption and energy production

  • Phosphorus

    moderate

    Vital for bone health and cellular repair

Wellness map

Health scores & processing

Weight loss
92
Satiety
82
Blood sugar
98
Gut health
65
Heart health
75
Fitness
88
Processing
95

NOVA processing scale

1
Min
2
3
4
Ultra

minimally processed · Whole food

Fresh or frozen whole squid is an unprocessed whole food. However, commercially prepared calamari rings or battered squid products are ultra-processed and high in unhealthy fats.

Diet compatibility

  • Weight loss
  • Muscle gain
  • Diabetes
  • Gut health
  • Low carb
  • High protein
  • Heart health

Relative standing

Food rankings

Qualitative ranks compared to similar whole foods.

  • Satietygood
  • Blood sugarexcellent
  • Nutrient densitygood
  • Fitness fuelexcellent
  • Processing qualityexcellent

Eat with confidence

Food safety profile

Squid is generally safe when cooked thoroughly, which eliminates parasites and bacteria. Raw squid carries a risk of parasitic infection and vibrio. Heavy metal accumulation is a moderate concern but lower than in large predatory fish.

80safety

Evidence confidence 85%

  • Pesticideslow
  • Antibioticslow
  • Heavy metalsmoderate
  • Contaminationmoderate

Watch for

  • cadmium
  • lead
  • vibrio parahaemolyticus
  • anisakis parasites

Safer choices

Sustainably caught Pacific or Atlantic squid from clean waters.

Prep tips

Cook completely to an internal temperature of 145°F (63°C) to kill parasites and bacteria. Avoid cross-contamination with raw seafood.

Monitoring of heavy metals in cephalopods is standard, as they can accumulate cadmium and lead from marine environments.

Deep dive

Health analysis

How this food may fit different goals and preparation choices.

  1. Weight loss

    Exceptional for weight loss due to extremely low energy density and high protein content, which maximizes fullness per calorie consumed.

  2. Blood sugar

    Perfect for blood sugar control with virtually zero carbohydrates and a glycemic index of zero, preventing any glucose spikes.

  3. Fitness & energy

    Excellent lean protein source for muscle repair and growth, though it lacks the fast-digesting carbohydrates needed for immediate post-workout glycogen replenishment.

  4. Gut health

    Neutral for gut health; it provides no dietary fiber to feed the microbiome, but is easily digested by most people when cooked properly.

  5. Processing quality

    Whole fresh or frozen squid is entirely unprocessed. Consumers should avoid pre-breaded calamari, which introduces refined carbs and unhealthy frying oils.

  6. Food safety

    Must be cooked thoroughly to mitigate the risk of marine parasites and bacterial contamination. Moderate heavy metal accumulation is possible but generally safe in moderation.

  7. Common mistakes

    Frying squid in heavy batter transforms it from a low-calorie health food into a high-calorie, high-fat indulgence. Overcooking fresh squid makes it rubbery and tough.

  8. Best preparation

    Quick grilling, sautéing, or boiling for 2-3 minutes, or slow-cooking for 30+ minutes to tenderize without adding excess fat.

Practical guide

Best use cases

When and how this food fits real eating patterns.

  • low-carb seafood dinner

    Grilled or sautéed squid provides a filling, zero-carb main course for ketogenic or diabetic meal plans.

  • lean muscle building

    Delivers a high dose of complete protein with minimal fat, supporting muscle synthesis without adding excess calories.

  • high-volume low-calorie eating

    Its low energy density allows for generous portion sizes that promote physical fullness without caloric excess.

  • quick weeknight protein

    Cooks in just 2-3 minutes on a hot grill or pan, ideal for fast, nutritious meals.

Balance sheet

Pros & cons

Upsides

  • Extremely low in calories and carbohydrates
  • Rich in high-quality, complete protein
  • Excellent source of vitamin B12 and selenium
  • Very low in saturated fat
  • Versatile and quick to cook

Trade-offs

  • High in dietary cholesterol, which may concern some individuals
  • Can become rubbery and unpalatable if overcooked
  • Commonly served fried and breaded, which ruins its nutritional profile
  • Risk of heavy metal accumulation like cadmium
  • Potential allergen for those with shellfish sensitivities

Fit check

Who is it for?

Great match

  • weight loss diets
  • ketogenic and low-carb diets
  • diabetic meal plans
  • lean muscle gain
  • quick high-protein meals

Consider alternatives

  • strict low-cholesterol diets prescribed by doctors
  • people with shellfish or mollusk allergies
  • those who only eat it deep-fried

Side by side

How it compares

Open the full head-to-head analysis for nutrition, safety, and practical tradeoffs.

  • Squid

    This food

    Squid

    VS90% alike
    Shrimp

    Compare with

    Shrimp

    Squid and shrimp are both lean, low-carb proteins. Squid has slightly fewer calories and more iron, while shrimp is lower in cholesterol and higher in iodine.

    Squid has fewer calories than shrimp, making it slightly better for weight loss, while both are excellent zero-carb proteins for blood sugar control.

    Squid vs Shrimp
  • Squid

    This food

    Squid

    VS95% alike
    Octopus

    Compare with

    Octopus

    Octopus is lower in cholesterol and higher in iron, but squid is lower in calories and higher in vitamin B12.

    Squid is lower in calories than octopus, but octopus provides more iron and satiety per serving.

    Squid vs Octopus
  • Squid

    This food

    Squid

    VS75% alike
    Cod

    Compare with

    Cod

    Cod is a finfish with slightly more calories and less cholesterol. Squid is lower in calories and richer in certain minerals like copper and selenium.

    Squid is lower in calories than cod, but cod offers a flakier texture and slightly more omega-3 fats.

    Squid vs Cod
  • Squid

    This food

    Squid

    VS50% alike
    Salmon

    Compare with

    Salmon

    Salmon is rich in omega-3 fatty acids and higher in calories, while squid is extremely lean and lower in calories.

    Squid is better for strict calorie restriction, while salmon provides more healthy fats and omega-3s for heart health.

    Squid vs Salmon
  • Squid

    This food

    Squid

    VS70% alike
    Chicken Breast

    Compare with

    Chicken Breast

    Chicken breast is slightly higher in calories and protein, but squid offers more micronutrients like B12 and selenium with fewer calories per gram.

    Chicken breast provides more protein per serving, but squid is lower in calories and richer in vitamin B12.

    Squid vs Chicken Breast
  • Squid

    This food

    Squid

    VS80% alike
    Lobster

    Compare with

    Lobster

    Lobster is slightly higher in protein and lower in cholesterol, but squid is significantly lower in calories and more affordable.

    Squid is much lower in calories than lobster, making it a better choice for weight loss, while both are zero-carb proteins.

    Squid vs Lobster
  • Squid

    This food

    Squid

    VS85% alike
    Scallops

    Compare with

    Scallops

    Scallops are lower in cholesterol and higher in omega-3s, while squid is slightly lower in calories and higher in zinc.

    Squid and scallops are both lean, low-calorie proteins, but squid has less cholesterol and fewer calories per serving.

    Squid vs Scallops
  • Squid

    This food

    Squid

    VS65% alike
    Tuna

    Compare with

    Tuna

    Tuna is higher in protein and omega-3s, but squid is much lower in calories and mercury.

    Tuna offers more protein and omega-3s, but squid is lower in calories and carries less mercury risk.

    Squid vs Tuna
  • Squid

    This food

    Squid

    VS60% alike
    Oysters

    Compare with

    Oysters

    Oysters are rich in zinc and iron with more carbohydrates, while squid is purely lean protein with zero carbs.

    Squid is a better zero-carb protein source, while oysters are superior for zinc and immune-boosting minerals.

    Squid vs Oysters
  • Squid

    This food

    Squid

    VS75% alike
    Crab

    Compare with

    Crab

    Crab is lower in cholesterol and higher in sodium, while squid is lower in calories and higher in protein.

    Squid is lower in calories and higher in protein than crab, making it a slightly better option for weight loss and muscle gain.

    Squid vs Crab

Common questions

FAQ

Answers aligned with how people search for this food.

  • Is squid good for weight loss?

    Yes, squid is excellent for weight loss. It is very low in calories and fat while being high in protein, which helps you feel full longer without consuming excess energy.

  • Is squid high in cholesterol?

    Squid is high in dietary cholesterol, but dietary cholesterol has minimal impact on blood cholesterol for most people. Because squid is very low in saturated fat, it does not typically raise harmful LDL cholesterol levels.

  • Can diabetics eat squid?

    Yes, squid is a great choice for diabetics. It contains virtually zero carbohydrates and will not spike blood sugar levels. Just avoid breaded or fried preparations.

  • Is calamari the same as squid?

    Yes, calamari is simply the culinary term for squid, especially when prepared as a fried appetizer. However, fried calamari is much higher in calories and fat than fresh, unprocessed squid.

  • Can you eat squid on a keto diet?

    Absolutely. Squid has almost zero carbs and is high in protein, making it an ideal seafood choice for ketogenic and low-carb diets when not breaded.

  • Is squid healthy if fried?

    Frying squid significantly diminishes its health benefits. Breading and deep-frying add refined carbohydrates, trans fats, and excess calories, turning a lean protein into an unhealthy indulgence.

  • Does squid have a lot of calories?

    No, raw or plainly cooked squid is very low in calories, providing only about 92 calories per 100 grams.

  • Is squid good for bodybuilding?

    Yes, squid is a high-quality, lean protein source that supports muscle repair and growth, making it a great addition to a bodybuilding diet.

  • What does squid taste like?

    Squid has a mild, slightly sweet, and subtle flavor. Its texture is firm and slightly chewy, and it readily absorbs the flavors of marinades and sauces.

  • How do you cook squid so it is not rubbery?

    Cook squid either very quickly (under 3 minutes) over high heat, or slowly (over 30 minutes) in a simmering liquid. Cooking it for a moderate amount of time causes the proteins to seize, resulting in a rubbery texture.

Transparency

Data confidence

Estimated confidence for nutrition data, interpretation, safety notes, and comparisons.

95

Nutrition data

90

Health analysis

88

Food safety

92

Comparisons