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Tuna Belly Calories
Very fatty, rich in omega-3, high-quality protein
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
1 piece (medium) of Tuna Belly (60 g) has 144 calories. That works out to 240 calories per 100 g. It contains 0 g of carbs, 13.5 g of protein, 10.5 g of fat and 0 g of fiber. Its 5.1 µg of B12 covers 213% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Tuna Belly Nutrition Facts
Selected: 1 piece (medium) · 60 g
144
KCAL / 60G
Carbs
0g
· 0% DV
Protein
13.5g
· 27% DV
Fat
10.5g
· 13% 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 36% · Fat 64%
Tuna Belly nutrition facts table · 1 piece (medium) (60 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 144 kcal | |
| Total fat | 10.5 g | 13% |
| Saturated fat | 2.7 g | 14% |
| Trans fat | 0 g | |
| Sodium | 24 mg | 1% |
| Total carbohydrate | 0 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 13.5 g | 27% |
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 Tuna Belly?
| Serving | Amount | Calories |
|---|---|---|
| 1 piece (medium) | 60 g | 144 kcal |
| 1 slice (thin) | 30 g | 72 kcal |
| 1 piece (small) | 40 g | 96 kcal |
| 1 slice (thick) | 50 g | 120 kcal |
| 1 piece (large) | 90 g | 216 kcal |
| 100 g | 100 g | 240 kcal |
| 1 serving (medium) | 100 g | 240 kcal |
| 1 piece (jumbo) | 120 g | 288 kcal |
| 1 serving (large) | 150 g | 360 kcal |
Calculated from 240 calories per 100 g.
Frequently Asked Questions About Tuna Belly
What is tuna belly?
Tuna belly is the fatty meat from the underside of the fish, rather than the leaner back loin. Its marbled texture stays tender when cooked briefly and gives the cut a richer, fuller flavour.
Why is tuna belly called toro in Japanese cooking?
Toro is the Japanese name for fatty tuna, especially prized belly cuts; otoro refers to the fattier section and chutoro to a moderately fatty one. The terms describe Japanese cuts and grading, so not every product sold as tuna belly is otoro.
Can you grill tuna belly without it falling apart?
Yes. Pat the tuna belly dry, use a clean, well-heated grill, and turn it once with a broad spatula or fish turner. Its fat helps keep it moist, but thin pieces can break if you move them before a seared surface forms.
Is tuna belly good for sushi or sashimi?
It can be served as sushi or sashimi when it is sold and handled for raw consumption. Ask the fishmonger specifically, keep it cold, and follow safe handling advice; cooking does not destroy histamine that may have formed in mishandled tuna.
How should you cook tuna belly so it stays tender?
Cook tuna belly quickly over high heat and avoid taking it to a dry, fully cooked texture. Its fat keeps it succulent, but prolonged cooking can still make the flesh firm; a brief sear is a popular way to serve it.
What is the difference between fresh tuna belly and canned tuna belly?
Fresh tuna belly is a raw cut that you cook or prepare for raw service only when suitable. Canned tuna belly has already been cooked and preserved, often in oil, so it flakes more easily and works well in salads or on toast.
How do you choose fresh tuna belly?
Choose tuna belly that has been kept properly chilled and has a clean, mild sea smell, not a sour or ammonia-like odour. The flesh should look moist rather than slimy; ask when it was cut and whether it is intended to be eaten raw.
Can tuna belly be frozen?
Yes. Freeze tuna belly promptly in an airtight, well-wrapped portion to limit air exposure, then thaw it in the refrigerator. Use it soon after thawing and do not refreeze it; freezing may soften the texture somewhat.
How long does cooked tuna belly keep in the refrigerator?
Keep cooked tuna belly covered in the refrigerator and eat it within three to four days. Cool it promptly rather than leaving it out, and discard it if it has been warm for an extended period or develops an unusual smell or texture.
Is tuna belly healthy to eat regularly?
Tuna belly provides protein and omega-3 fats, but it is much fattier than lean tuna and tuna can contain mercury. Enjoy it as part of a varied seafood diet, and follow local guidance on tuna frequency, especially for children and during pregnancy.
Tuna Belly Vitamins & Minerals
Vitamins
B12
5.1µg · 213% DV
B3
5.1mg · 32% DV
B6
0.54mg · 32% DV
Vitamin D
4.2µg · 21% DV
Minerals
Selenium
30µg · 55% DV
Phosphorus
162mg · 23% DV
Iodine
30µg · 20% DV
Potassium ⭐
228mg · 7% DV
Sodium
24mg · 1% DV
Tuna Belly Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Tuna Belly
To burn the 144 calories in 1 piece (medium) (60 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 Tuna Belly?
Tuna belly is the rich, fatty cut from the underside of the fish, prized for its tender texture and fuller flavour. In Japan, it is especially valued as toro, served as sushi or sashimi; elsewhere it may be lightly seared or grilled, so the centre stays moist. For English-speaking diners, it also works well as a special seafood course with simple sides rather than a heavily sauced dish.
It provides high-quality protein and omega-3 fats, and is considerably richer than leaner tuna cuts. A modest portion pairs well with citrus, crisp vegetables or a light salad, which balance its buttery richness without masking the flavour.
How Nutritious Is Tuna Belly?
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 Tuna Belly 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 Tuna Belly Contain Allergens?
Contains these allergens:
Which Diets Is Tuna Belly 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 Belly Fat Profile
SATURATED
2.7g
MONOUNSATURATED
3.9g
POLYUNSATURATED
1.92g
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.