TempoLife › Calorie database › Fish & seafood › Tuna
Tuna calories and nutrition facts
100 grams of tuna contains 184 calories, with 29.9 g of protein, 0 g of carbohydrate and 6.3 g of fat. Most of its calories come from protein.
Fresh tuna eats like a steak and carries a steak's protein with far less fat — one of the leanest substantial proteins in the sea. It dries out quickly past medium for exactly that reason. Note that tuna canned in oil lives in a different calorie neighbourhood than this fresh, cooked entry.
Where the calories come from
Protein 68% Carbs 0% Fat 32%
How tuna compares
Per 100 g, against the closest fish & seafood in this database.
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Tuna | 184 kcal | 29.9 g | 0 g | 6.3 g |
| Yellowtail, cooked | 187 kcal | 29.7 g | 0 g | 6.7 g |
| Mixed species sturgeon, smoked | 173 kcal | 31.2 g | 0 g | 4.4 g |
| Light tuna, canned in oil | 198 kcal | 29.1 g | 0 g | 8.2 g |
| White tuna, canned in oil | 186 kcal | 26.5 g | 0 g | 8.1 g |
Same food, different preparation
| Preparation | Calories | Protein | Fat |
|---|---|---|---|
| Tuna (typical) | 184 kcal | 29.9 g | 6.3 g |
| Canned tuna (canned) | 86 kcal | 19.4 g | 1 g |
Per 100 g. Water loss in cooking concentrates calories; added fat in frying adds its own.
Nutrition facts for tuna
| Nutrient | Per 100 g | Per 3 oz cooked |
|---|---|---|
| Calories | 184 kcal | 156 kcal |
| Protein | 29.9 g | 25 g |
| Carbohydrate | 0 g | 0 g |
| Fat | 6.3 g | 5 g |
| Fiber | 0 g | 0 g |
| Saturated fat | 1.6 g | 1 g |
| Salt | 0.1 g | 0 g |
Print an EU-style nutrition label for tuna — per 100 g and per portion.
Vitamins and minerals in tuna
Per 100 g, highest share of the Daily Value first. %DV = the adult Daily Value (FDA reference). USDA reference data — not medical advice.
| Nutrient | Per 100 g | %DV |
|---|---|---|
| Vitamin B12 | 10.9 µg | 453% |
| Selenium | 46.8 µg | 85% |
| Vitamin A | 757 µg | 84% |
| Niacin (B3) | 10.5 mg | 66% |
| Vitamin B6 | 0.53 mg | 31% |
| Phosphorus | 326 mg | 26% |
| Riboflavin (B2) | 0.31 mg | 24% |
| Thiamin (B1) | 0.28 mg | 23% |
See the richest foods per nutrient in the nutrient toplists.
Calories in common tuna servings
How many calories in a portion of tuna — reference serving estimates with the gram weight shown.
| Serving | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| 3 oz (85 g) | 156 kcal | 25 g | 0 g | 5 g |
| 100 g (100 g) | 184 kcal | 30 g | 0 g | 6 g |
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Frequently asked questions
How many calories are in tuna?
Tuna has 184 calories per 100 grams. A typical serving of 3 oz cooked (85 g) has about 156 calories.
How much protein is in tuna?
Tuna contains 29.9 g of protein per 100 g, or about 25 g per 3 oz cooked.
Is tuna low in carbs?
Yes by the numbers: Tuna has 0 g of carbohydrate per 100 g. People following low-carb or keto approaches often include foods in this range — portion size and your own plan still decide.
Is tuna a good source of protein?
Tuna provides 29.9 g of protein per 100 g — about 68% of its calories come from protein.
Are these tuna calories exact?
No. These are per-100-gram reference values from the USDA FoodData Central SR Legacy source family. Portion size, ripeness, cut and cooking method all change the real number, so treat them as an estimate and log your own portion.
Related foods
Source: USDA FoodData Central SR Legacy #173707 (2018-04 release). US Government work — public domain in the United States. Reference values per 100 g edible portion.
