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Diet tuna Calories
Low-fat, high-protein, diet-friendly tuna
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
1 can (medium) of Diet tuna (120 g) has 115 calories. That works out to 96 calories per 100 g. It contains 0 g of carbs, 27 g of protein, 1 g of fat and 0 g of fiber. Its 96 µg of Selenium covers 175% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.
Diet tuna Nutrition Facts
Selected: 1 can (medium) · 120 g
115
KCAL / 120G
Carbs
0g
· 0% DV
Protein
27g
· 54% DV
Fat
1g
· 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 92% · Fat 8%
Diet tuna nutrition facts table · 1 can (medium) (120 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 115 kcal | |
| Total fat | 1 g | 1% |
| Saturated fat | 0.24 g | 1% |
| Trans fat | 0 g | |
| Sodium | 54 mg | 2% |
| Total carbohydrate | 0 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 27 g | 54% |
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 Can of Diet tuna?
| Serving | Amount | Calories |
|---|---|---|
| 1 can (medium) | 120 g | 115 kcal |
| 1 piece (small) | 50 g | 48 kcal |
| 1 can (small) | 60 g | 58 kcal |
| 1 piece (medium) | 80 g | 77 kcal |
| 100 g | 100 g | 96 kcal |
| 1 serving (medium) | 100 g | 96 kcal |
| 1 piece (large) | 150 g | 144 kcal |
| 1 can (large) | 160 g | 154 kcal |
| 1 pack (jumbo) | 200 g | 192 kcal |
Calculated from 96 calories per 100 g.
Frequently Asked Questions About Diet tuna
Is diet tuna good for weight loss?
Yes, diet tuna can be a useful protein choice in a weight-loss meal because it can make a meal more filling without adding much fat. Pair it with vegetables, and go easy on mayonnaise, oily dressings, and oversized bread portions.
Is diet tuna already cooked?
Yes, canned diet tuna is generally cooked during processing and is ready to eat straight from an intact can. You can add it to a sandwich or salad without reheating; discard cans that are swollen, leaking, or badly damaged.
How often can you eat diet tuna?
It is sensible to vary diet tuna with other fish and protein foods rather than rely on it every day. Tuna’s mercury content varies by species, so frequent consumers should consider the species and follow current local seafood guidance.
Do you drain diet tuna before eating it?
Usually, yes: draining diet tuna removes its packing liquid and helps keep sandwiches and salads from becoming watery. If you want a moister texture, reserve a little liquid and mix it back in rather than adding it all at once.
How long does diet tuna last after opening?
Move leftover diet tuna out of the can into a covered container and refrigerate it promptly. Use it within three to four days, and discard it if it has been left at room temperature for too long.
Can you freeze diet tuna?
Yes, you can freeze leftover diet tuna after draining it and placing it in a freezer-safe airtight container. Thaw it in the refrigerator; freezing can make the texture drier or more crumbly, so it works best in cooked dishes or mixed fillings.
What is the difference between diet tuna and regular canned tuna?
Diet tuna is sold as a lower-fat option, while regular canned tuna may be packed in oil and have a richer texture. Draining either type removes excess packing liquid, but it does not make oil-packed tuna identical to a low-fat product.
Can you microwave diet tuna?
Yes, diet tuna can be warmed in a microwave, but transfer it from the can to a microwave-safe dish first. Heat it briefly and stir it into the rest of the meal; prolonged heating can dry it out and intensify its smell.
What goes well with diet tuna?
Diet tuna pairs well with crisp vegetables, beans, whole-grain bread, pasta, or a simple lemon dressing. For a creamy filling, mix it with a modest amount of yogurt or mayonnaise, then add herbs, celery, or chopped pickles for texture.
Can you eat diet tuna during pregnancy?
Often, tuna can be part of a pregnancy diet, but the safe amount depends on the tuna species and local mercury guidance. Choose fully cooked commercial canned tuna and ask your maternity-care professional which types and portions suit your circumstances.
Diet tuna Vitamins & Minerals
Vitamins
B12
2.64µg · 110% DV
B3
12.6mg · 79% DV
B6
1.08mg · 64% DV
B5
0.84mg · 17% DV
Minerals
Selenium
96µg · 175% DV
Phosphorus
300mg · 43% DV
Iodine
60µg · 40% DV
Potassium ⭐
384mg · 11% DV
Sodium
54mg · 2% DV
Diet tuna Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Diet tuna
To burn the 115 calories in 1 can (medium) (120 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 Diet tuna?
Diet tuna is a lean tuna product, most often sold canned in water or its own juices rather than packed in oil. It has a mild, savoury flavour and firm flakes that break apart easily. Drain it and fold it into a salad, sandwich, wrap or pasta; lemon, herbs and crunchy vegetables pair especially well. For a lighter meal, use a lemon-based dressing instead of a creamy one, and check the can’s label if you are comparing products, as packing liquids and salt levels can vary.
It is notably high in protein and low in fat: per 100 g, it provides 22.5 g of protein and 0.8 g of fat. Its convenience makes it useful for a quick lunch, especially alongside vegetables or whole-grain bread.
How Nutritious Is Diet tuna?
Nutrient density
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
High
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 Diet tuna 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 Diet tuna Contain Allergens?
Contains these allergens:
Which Diets Is Diet tuna 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
Diet tuna Fat Profile
SATURATED
0.24g
MONOUNSATURATED
0.12g
POLYUNSATURATED
0.36g
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.