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Raw tuna steak Calories
High protein, zero carb, rich in selenium and B12
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
1 piece (medium) of Raw tuna steak (170 g) has 185 calories. That works out to 109 calories per 100 g. It contains 0 g of carbs, 41.5 g of protein, 0.9 g of fat and 0 g of fiber. Its 153 µg of Selenium covers 278% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Raw tuna steak Nutrition Facts
Selected: 1 piece (medium) · 170 g
185
KCAL / 170G
Carbs
0g
· 0% DV
Protein
41.5g
· 83% DV
Fat
0.9g
· 1% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 0% · Protein 95% · Fat 5%
Raw tuna steak nutrition facts table · 1 piece (medium) (170 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 185 kcal | |
| Total fat | 0.9 g | 1% |
| Saturated fat | 0.27 g | 1% |
| Trans fat | 0 g | |
| Sodium | 63 mg | 3% |
| Total carbohydrate | 0 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 41.5 g | 83% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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How Many Calories in 1 Medium Raw tuna steak?
| Serving | Amount | Calories |
|---|---|---|
| 1 piece (medium) | 170 g | 185 kcal |
| 1 ounce (small) | 28 g | 31 kcal |
| 1 serving (half) | 85 g | 93 kcal |
| 100 g | 100 g | 109 kcal |
| 1 piece (small) | 120 g | 131 kcal |
| 1 cup (diced) | 140 g | 153 kcal |
| 1 piece (large) | 230 g | 251 kcal |
| 1 serving (double) | 340 g | 371 kcal |
Calculated from 109 calories per 100 g.
Frequently Asked Questions About Raw tuna steak
Is raw tuna steak safe to eat?
Raw tuna steak can be eaten safely only when it has been sourced and handled for raw consumption. Fresh appearance alone does not guarantee safety: buy it from a reputable fishmonger, keep it cold, and serve it promptly.
What does “sushi-grade” mean for raw tuna steak?
“Sushi-grade” is not a universal safety certification, so the label alone is not enough. Ask the seller whether the raw tuna steak is intended to be eaten raw and how it was handled or frozen to control parasite risks.
Can you freeze raw tuna steak and then eat it raw?
Not reliably in a typical home freezer. Freezing can control parasites only when specific time-and-temperature requirements are met; ask the supplier whether the raw tuna steak was frozen appropriately for raw consumption.
How long does raw tuna steak last in the fridge?
Keep raw tuna steak covered in the coldest part of the refrigerator and use it as soon as possible, generally within 1–2 days. Discard it if it has been left at room temperature for an extended period rather than chilling it again.
Can you eat raw tuna steak while pregnant?
It is safest to avoid raw tuna steak during pregnancy because raw seafood can carry foodborne pathogens, and tuna can contain mercury. Ask your clinician which cooked fish choices and portions are appropriate for your pregnancy.
How can you tell if raw tuna steak has gone bad?
Spoiled raw tuna steak may smell sour, strongly fishy, or ammonia-like, and its texture may turn slimy. Do not taste it to check. A normal smell does not prove it is safe, so buy from a trusted source and keep it chilled.
Should you wash raw tuna steak before eating it?
No. Rinsing raw tuna steak can splash germs onto the sink, counters, and nearby food without making the fish safer. Pat it dry with a clean paper towel, then wash your hands, knife, and cutting board.
Can raw tuna steak cause histamine poisoning?
Yes. If tuna is kept too warm, histamine can build up and cause flushing, headache, or a burning sensation in the mouth; cooking does not destroy it. Stop eating the fish if symptoms start, and seek medical help for severe symptoms.
How do you sear tuna steak without cooking it all the way through?
Use a very hot pan and sear the outside briefly, turning the steak with clean utensils. A rare centre is still raw fish, so only prepare it this way if the tuna steak was sold as suitable for raw consumption.
Does lemon juice make raw tuna steak safe, like cooking does?
No. Lemon or lime juice changes the texture and colour of raw tuna steak but does not reliably kill harmful microbes or parasites. Keep it refrigerated while marinating, and do not reuse marinade that touched the raw fish.
Raw tuna steak Vitamins & Minerals
Vitamins
B3
31.96mg · 200% DV
B12
4.25µg · 177% DV
B6
1.58mg · 93% DV
Vitamin D
8.5µg · 43% DV
Minerals
Selenium
153µg · 278% DV
Phosphorus
473mg · 68% DV
Iodine
85µg · 57% DV
Potassium ⭐
750mg · 22% DV
Sodium
63mg · 3% DV
Raw tuna steak Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Raw tuna steak
To burn the 185 calories in 1 piece (medium) (170 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
What is Raw tuna steak?
Raw tuna steak is a thick cut from the loin of a tuna, served without cooking and usually chosen for raw preparations. It is familiar in Japanese sashimi and sushi, and also appears in poke bowls, crudo and other seafood dishes around the world. The flavour is clean and gently savoury, while the texture is firm yet tender when sliced thinly. It is high in protein and contains no carbohydrates; a 100 g portion provides 24.4 g of protein. For a simple meal, serve it with rice, crisp vegetables or citrus. If preparing it raw at home, choose fish specifically suitable for raw eating and keep it properly chilled.
How Nutritious Is Raw tuna steak?
Nutrient density
Very high
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
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.
Is Raw tuna steak Processed?
NOVA 1
Unprocessed
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 Raw tuna steak Contain Allergens?
Contains these allergens:
Which Diets Is Raw 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
Raw tuna steak Fat Profile
SATURATED
0.27g
MONOUNSATURATED
0.2g
POLYUNSATURATED
0.24g
Omega 6:3 ratio 0:1
Below the ideal 4:1 — a good omega balance.
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Nutrition data compiled from USDA FoodData Central and scientific sources.