SEAFOOD · per 100g edible portion
Tuna
Nutrition facts for tuna (raw) — measured values from USDA FoodData Central, standardized to a 100g basis.
Ranks in 8 of 8 tracked rankings
Energy
109kcal
per 100g
Per 1 oz, boneless (28.35 g): 31 kcal · 6.9 g protein · 0 g carbs · 0.1 g fat
Protein
24.4g
Carbs
0g
Fiber
0g
Fat
0.5g
Macronutrient mix
Share of calories from each macro (Atwater 4/4/9 kcal per g)
In context
Why tuna stands out
Where tuna sits among the 61 foods in the database, per nutrient — computed from measured values only.
High in
- Vitamin B3#1 · 18.5 mg
- Vitamin B6#2 · 0.9 mg
- Vitamin D#3 · 1.7 µg
Source of
- Protein#4 · 24.4 g
- Vitamin B12#4 · 2.1 µg
Low in
Nothing in the top tier for this food.
Serving sizes
Household measures
| Measure | Grams | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 cubic inch, boneless | 16 g | 17 kcal | 3.9 g | 0 g | 0.1 g |
| 1 oz, boneless | 28.35 g | 31 kcal | 6.9 g | 0 g | 0.1 g |
| 3 oz | 85 g | 93 kcal | 20.7 g | 0 g | 0.4 g |
Measures from USDA food portion data; per-serving values are derived from the measured per-100g values.
Full profile
Nutrition facts per 100g
| Nutrient | Amount |
|---|---|
| Calories | 109 kcal |
| Protein | 24.4 g |
| Carbohydrates | 0 g |
| Fiber | 0 g |
| Sugar | 0 g |
| Fat | 0.49 g |
| Saturated Fat | 0.17 g |
| Calcium | 4 mg |
| Iron | 0.77 mg |
| Magnesium | 35 mg |
| Phosphorus | 278 mg |
| Potassium | 441 mg |
| Sodium | 45 mg |
| Zinc | 0.37 mg |
| Vitamin A | 18 µg |
| Vitamin C | 0 mg |
| Vitamin D | 1.7 µg |
| Vitamin E | 0.24 mg |
| Vitamin K | 0.1 µg |
| Vitamin B1 | 0.12 mg |
| Vitamin B2 | 0.12 mg |
| Vitamin B3 | 18.48 mg |
| Vitamin B6 | 0.93 mg |
| Vitamin B12 | 2.08 µg |
| Folate | 2 µg |
Common questions
Tuna FAQ
How many calories in 1 oz, boneless of tuna?
1 oz, boneless of tuna (28.35 g) provides about 31 kcal. Per 100 g, tuna has 109 kcal.
How much protein in tuna?
Tuna contains 24.4 g of protein per 100 g — about 6.9 g per 1 oz, boneless (28.35 g).
Is tuna high in fiber?
Tuna has 0 g of fiber per 100 g and ranks #57 of 58 tracked foods for fiber.
Explore
Where tuna ranks
Food graph
Nutritionally similar to tuna
Computed from all 25 tracked nutrient profiles in the database — closest overall composition, not necessarily the same food family.
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Data Provenance
USDA FoodData Central
SR Legacy
- Source
- USDA FoodData Central
- FDC ID
- 175159
- Basis
- 100 g edible portion
- Record type
- SR Legacy
- Retrieved
- September 24, 2026