Mussels are a standout choice for anyone tracking macronutrients: they pack a serious protein punch for relatively few calories, along with vitamin B12, iron, selenium, and omega-3 fatty acids. The Mussel Protein Calculator helps you turn raw serving sizes — grams, ounces, even pounds — into a clear protein figure based on how your mussels are prepared.
Just enter the amount you plan to eat, choose whether your mussels are cooked/steamed, raw, or frozen/thawed, and the tool instantly computes protein per serving, total calories, and the percentage of your daily protein target. It even includes quick-fill buttons for common portions like a 3 oz entrée or a 1-cup serving.
Whether you’re an athlete planning meals, someone tracking protein for weight loss, or just curious about your seafood intake, this calculator gives you a practical, evidence-based number in seconds — no need to look up USDA tables by hand.
🐚 Mussel Protein Calculator
Find out how much protein you are getting from cooked, steamed, or raw mussels — and how it fits your daily target.
📊 Results
How It Works
The Mussel Protein Calculator is based on nutrient values published in the USDA FoodData Central database for blue mussels (Mytilus edulis). Three preparation options are included:
- Cooked / steamed mussels: 23.8 g protein and 172 kcal per 100 g of edible meat.
- Raw mussels: 11.9 g protein and 86 kcal per 100 g.
- Frozen / thawed: an estimated 20.8 g protein and 148 kcal per 100 g, since commercial products vary in added water.
The core formula is simple:
Protein = (serving weight in grams ÷ 100) × protein per 100 g × number of servings
The tool first converts your chosen unit (grams, ounces, or pounds) to grams, then multiplies by the protein density for the selected preparation. The same logic is used for calories. The daily percentage is calculated against the protein target you enter, defaulting to 50 g per day — the Reference Daily Intake for an average adult on a 2,000-kcal diet.
Protein & Nutrition Profile
Mussels are a nutritionally dense shellfish. A 100 g portion of cooked mussels provides roughly:
| Nutrient | Cooked / steamed (per 100 g) | Raw (per 100 g) |
|---|---|---|
| Protein | 23.8 g | 11.9 g |
| Calories | 172 kcal | 86 kcal |
| Total fat | 4.5 g | 2.2 g |
| Carbohydrates | 7.4 g | 3.7 g |
| Omega-3 fatty acids | about 0.6 g | about 0.3 g |
Because cooking removes water, the same raw weight becomes a smaller cooked portion, so cooked mussels are more protein-dense per 100 g. Mussels also supply vitamin B12, iron, selenium, zinc, and iodine, and they are generally low in mercury — a useful choice for people who want a seafood protein without the heavy-metal concerns of larger predator fish.
Worked Examples
Example 1: 3 oz of steamed mussels.
3 oz × 28.35 g/oz = 85.1 g. Protein = (85.1 ÷ 100) × 23.8 = 20.3 g. That is about 40% of a 50 g daily target.
Example 2: 150 g raw mussel meat (about 1 cup).
Protein = (150 ÷ 100) × 11.9 = 17.9 g. Estimated calories = (150 ÷ 100) × 86 = 129 kcal. This is a lean serving suitable for weight-loss meals.
Example 3: 500 g cooked mussel meat for two people.
Total protein = (500 ÷ 100) × 23.8 = 119 g. Split between two people, each serving contains about 59.5 g of protein — close to the entire 50 g default daily target.
Tips & Best Practices
- Weigh the edible meat only, not the shells. Shells can account for 50–70% of the total weight of mussels in the shell.
- A standard restaurant serving of mussels in shells (about 1 kg) yields roughly 200–250 g of meat; use that range in the calculator.
- If you are meal-prepping, cook a batch, drain the liquid, and weigh the cooked meat before portioning it into containers.
- Log sauces separately. Butter, cream, wine, or garlic oil can add 100–300 kcal to a mussel dish and change its overall macros.
- Adjust the daily target upward for athletic goals — many active people aim for 1.2–2.0 g of protein per kg of body weight per day.
Pro tip: One cup of cooked mussel meat weighs about 150 g. If you don't have a scale, this volume estimate is a quick way to portion your serving.
Frequently Asked Questions
Is mussel protein a complete protein?
Yes. Mussels contain all nine essential amino acids, so they are considered a high-quality, complete protein source.
Why does raw mussel meat show less protein than cooked for the same weight?
Because raw meat contains more water. Cooking drives off moisture, concentrating the protein, so 100 g of cooked meat contains more protein than 100 g of raw meat.
Can this calculator be used for canned or smoked mussels?
Not precisely. The canned and smoked forms can contain added oil, salt, or water, so their nutrient density differs. Choose the closest option and treat the result as an estimate.
Are mussels good for building muscle?
Absolutely. They combine a complete amino acid profile with low saturated fat and useful amounts of zinc and B vitamins, which support muscle repair and energy metabolism. For other shellfish, try our crab nutrition tool or compare with the cod calorie calculator.
Limitations & Accuracy Notes
Values are averages from USDA FoodData Central and may vary by season, species, and farming methods. Blue mussels from different regions can differ slightly in fat and protein content. The frozen/thawed estimate is approximate because freezing methods vary: glazed or water-packed products can weigh more without adding protein.
This calculator does not account for shell weight, added sauces, or cooking fats. Always weigh the edible portion only. For personalized dietary advice, consult a registered dietitian or a physician. You can also review background information on mussel biology and cuisine on Wikipedia's mussel article.