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High in protein, vitamin B12, and selenium
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 can (whole) of Plain Canned Tuna (120 g) has 139 calories. That works out to 116 calories per 100 g. It contains 0 g of carbs, 30.6 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.
Selected: 1 can (whole) · 120 g
139
KCAL / 120G
Carbs
0g
· 0% DV
Protein
30.6g
· 61% 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 93% · Fat 7%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 139 kcal | |
| Total fat | 1 g | 1% |
| Saturated fat | 0.24 g | 1% |
| Trans fat | 0 g | |
| Sodium | 296 mg | 13% |
| Total carbohydrate | 0 g | 0% |
| Fiber | 0 g | 0% |
| Protein | 30.6 g | 61% |
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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| Serving | Amount | Calories |
|---|---|---|
| 1 can (whole) | 120 g | 139 kcal |
| 1 tablespoon (medium) | 15 g | 17 kcal |
| 1 ounce (small) | 28 g | 32 kcal |
| 1 can (quarter) | 30 g | 35 kcal |
| 1 can (half) | 60 g | 70 kcal |
| 1 serving (medium) | 85 g | 99 kcal |
| 100 g | 100 g | 116 kcal |
| 1 serving (large) | 170 g | 197 kcal |
Calculated from 116 calories per 100 g.
Yes, plain canned tuna is a convenient source of protein, vitamin B12 and selenium. It can fit into a balanced eating pattern; if you are limiting sodium, compare products because the amount of salt varies between cans.
Yes, tuna can contain mercury, and levels vary with the species and catch. Vary the fish you eat rather than relying on tuna alone; people who need specific mercury guidance should follow recommendations for their location and situation.
No, plain canned tuna is ready to eat because it is cooked during processing. You can drain it and add it straight to a sandwich or salad, or warm it in a dish if you prefer.
Transfer leftover plain canned tuna to a covered container and refrigerate it promptly. Use it within a few days, and discard it if it smells sour, changes colour, or develops an unusual texture.
Yes, you can freeze leftover plain canned tuna in an airtight, freezer-safe container rather than in the opened can. Thawed tuna may be drier or more crumbly, so it works especially well in cooked dishes or mixed fillings.
Yes, plain canned tuna is cooked and can be eaten during pregnancy within recommended limits. Tuna mercury levels vary by species, so follow current local guidance on which types and amounts are appropriate while pregnant.
Draining plain canned tuna is optional, not a food-safety requirement. Removing the liquid gives you a firmer, less wet texture for sandwiches or salads; keeping some can help tuna stay moist in a recipe.
Plain canned tuna is processed: the fish is typically cooked, packed into cans, sealed and heat-treated. This preserves it for storage without refrigeration until opening; “plain” describes the simple preparation, not an unprocessed product.
Plain canned tuna has been cooked and packed for storage, while fresh tuna is raw and needs cooking. Canned tuna is convenient and consistent; fresh tuna’s texture and flavour depend more on the cut and cooking method.
Mix plain canned tuna with mayonnaise or yogurt, lemon, pepper and chopped celery or onion for a quick filling. For a meal without a creamy dressing, combine it with beans, tomatoes and greens, then season to taste.
Vitamins
B12
3µg · 125% DV
B3
12.6mg · 79% DV
B6
0.54mg · 32% DV
Vitamin D
2.04µg · 10% DV
Minerals
Selenium
96µg · 175% DV
Phosphorus
305mg · 44% DV
Iodine
20µg · 13% DV
Sodium
296mg · 13% DV
Potassium ⭐
284mg · 8% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 139 calories in 1 can (whole) (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.
Plain Canned Tuna is cooked tuna packed without a sauce, so its mild, savoury flavour and flaky texture come through. Depending on the product, it may be packed in water or brine; once opened, the fish can be left in chunks or flaked with a fork.
It is a convenient pantry staple worldwide, commonly added to sandwiches, salads, pasta and grain bowls, often with lemon, herbs or crisp vegetables. It is high in protein, with 25.5 g per 100 g, and also provides vitamin B12 and selenium. Drain it before mixing to keep a salad from becoming watery, or pair it with beans and greens for a more filling meal.
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.
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.
NOVA 3
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.
Contains these allergens:
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
SATURATED
0.24g
MONOUNSATURATED
0.22g
POLYUNSATURATED
0.34g
Omega 6:3 ratio 0.2:1
Below the ideal 4:1 — a good omega balance.
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Nutrition data compiled from USDA FoodData Central and scientific sources.