Fish Cooking Yield Calculator
Convert raw to cooked weight — or work backwards. Compare 11 methods, weight loss %, and logged nutrition for 45+ species.
What Is Cooking Yield?
Cooking yield is the percentage of raw weight that remains after cooking: cooked weight ÷ raw weight × 100. For fish fillets, yield is primarily driven by cooking method, temperature, and time — not species name alone. Our calculator uses method-based defaults for boneless fillets.
Why Fish Loses Weight During Cooking
Heat causes muscle proteins to denature and contract, pressing water out of the fillet. Fatty fish may also lose some fat during high-heat cooking. Dry-heat methods (grilling, broiling, frying) generally show more weight loss than moist-heat methods (steaming, poaching) in published studies.
How Cooking Methods Compare
In our model, steaming and poaching retain roughly 93–94% of raw weight. Grilling and baking retain about 88–90%. Pan frying about 85%, deep frying about 80%, and smoking about 75%. These are planning estimates — your exact recipe, doneness, and fillet thickness will change results.
Raw vs Cooked Nutrition Logging
When a fillet loses water, calories and protein become more concentrated per gram of cooked fish even though total nutrient mass changes only slightly. Frying adds calories from absorbed oil in our model. Use the nutrition cards in the results panel for logging estimates after cooking.
Estimating Fish for Recipes and Meal Prep
If a recipe calls for 500g cooked fish, use reverse mode to find the raw weight to purchase. For group quantities, try our Fish Portion Calculator. For cooking time and temperature planning across 14 methods, use our Fish Cooking Time Calculator. For hot-smoking time and temperature planning, use our Fish Smoking Calculator. For full calorie and macro logging, use the Fish Calories Calculator.