1 piece (medium) of Tuna Steak (150 g) has 198 calories. That works out to 132 calories per 100 g. It contains 0 g of carbs, 42 g of protein, 2 g of fat and 0 g of fiber. Its 27.8 mg of B3 covers 173% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.

Tuna Steak Nutrition Facts

Selected: 100 g

132

KCAL / 100G

Carbs

· 0% DV

Protein

28g

· 56% DV

Fat

1.3g

· 2% DV

Fiber

· 0% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 0% · Protein 91% · Fat 9%

Tuna Steak Vitamins & Minerals

Vitamins

18.5mg · 116% DV

B12

2.2µg · 92% DV

1mg · 59% DV

Vitamin D

5µg · 25% DV

Minerals

Selenium

36µg · 65% DV

Phosphorus

270mg · 39% DV

Iodine

50µg · 33% DV

Potassium ⭐

450mg · 13% DV

How Nutritious Is Tuna Steak?

Nutrient density

Very high

80/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

57/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Tuna Steak Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Tuna Steak

To burn the 132 calories in 100 g:

🚶

33min

Walking (5 km/h)

🏃

13min

Running (8 km/h)

🚴

18min

Cycling

🏊

15min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

Is Tuna Steak Processed?

NOVA 2

Minimally Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Tuna Steak Contain Allergens?

Contains these allergens:

Gluten free

Dairy free

Eggs free

Peanuts free

Tree nuts free

Fish yes

Soy free

Sesame free

Which Diets Is Tuna Steak Good For?

Vegan

— Not suitable

Vegetarian

— Not suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

✓ Suitable

Low FODMAP

— Not suitable

Tuna Steak Fat Profile

SATURATED

0.3g

MONOUNSATURATED

0.3g

POLYUNSATURATED

0.7g

⚖️

Omega 6:3 ratio 0:1

Below the ideal 4:1 — a good omega balance.

Compare Tuna Steak

🐟vs🐟

Tuna Steak vs Salmon Fillet74 kcal fewer per 100 g

→🐟vs🐟

Tuna Steak vs Canned Tuna16 kcal more per 100 g

→🐟vs🐟

Tuna Steak vs Fish22 kcal more per 100 g

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Tuna Steak vs TunaSame calories per 100 g

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Foods Similar to Tuna Steak

🐟

Salmon Fillet

206 kcal

🐟

Canned Tuna

116 kcal

🐟

Fish

110 kcal

🐟

Tuna

132 kcal

🐟

Baked Sea Bass

110 kcal

🐟

Grilled Sea Bass

124 kcal

🐟

Whiting

90 kcal

🦪

Stuffed Mussels

175 kcal

Frequently Asked Questions About Tuna Steak

How many calories and how much protein are in tuna steak?

Tuna steak provides 132 calories and 28 g of protein per 100 g. It contains 0 g of carbohydrates.

Is tuna steak suitable for a keto diet?

Yes. With 0 g of carbohydrates per 100 g, tuna steak is compatible with keto and ketovore diets. It also fits paleo, Mediterranean, pescatarian, and gluten-free eating patterns.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 23, 2026